Snowing. I know. Well talk more with al about that in a minute and breaking news outut ofl. A. X. Inn a minute. But f fst lets stata with the escalatingar of words between republican president ial candidates donald trump and jeb bush. At issue, trumps controversial remarks about the 9 11 attacks and then president george w. Bush. Nbc National CorrespondentPeter Alexander has more on all of this. Peerkts good morning to you. Hey, matt, good monday morning to you. This line of attacks has clearly infuriated jeb bush, criticized trumps repeated jabs for much of this campaign. This time hes all in defending his brother and taking aim at the republican partys frontrunner. This morning a feed between donald trump and jeb bush is boiling over, this time a fight i dont want jeb bush to say my brother kept us safe because september 11th was one of the worst days in the history of this country. My brother responded to a crisis, and he did it as you would hope a president wouldldo. He uninid the country. Reporter the dispute started simmering fridayay hen you talk about george bush, i mean, say what you want, the World Trade Center came down during his time. Hold on. You cant blame george bush for that. Really. He was president , okay . Blame him or dont blame him, but he was president. Reporter with sagging poll numbers bush has let himself be tormented by trump, but this time he showed new fire blasting trumps comments as pathetic. Im used to dealing with killers, people that go rrr, rrr. Reporter unleashing this new video ridiculing trumps readiness to be commander in chief and hammering home his point about the former reality tv star. It looks as though hes an actor playing the role of f candidate for president. Mr. Trump talks about things as though hes still on the apprentice. Reporter trump insists 9 11 wouldnt have happened if he had been president. Im extremely, extremely tough on illegal immigration. I believe that if i were running those things, i doubt that those people would have been in the country. Reporter and so it continues. Make no mistake. This was a calculated strategy by jeb bushs team, a Campaign Adviser telling me this morning that the new video we showed you more than a month. They have been waiting for the right moment to pounce, and take a look at this. Bush is fundraising off the fierce backandforth this morning. Website. Enough is enough, it reads, but analysts say time going after trump is timimlost anandefining yourself fofovoters anantime until the first vote is cast is running low. Peter, thank you. On the democratic signs are ththe new signs that Vice President joe biden is leading into a entry into the race . Nbcs Kristen Welker is live on that beat this morning. Kristen, good rning. Reporter savannah,ood sources close to the Vice President say a decision could democrats agree a final answer cant come soon enough. With Vice President joe biden nearing a decision, he attended mass sunday, speaking out briefly to the press. Although not exactly answering the question on everyones mind. Does joe biden need to get in now . The continuing mystery of joe biden. Joe biden speculation continues. Reporter the Vice President spent most of the weekend with family in delaware, attending his grandkidid sporting events, but behind the scenes he worked the phone. The biggest iicator he may be getting in, a 20minute callschaitberger, the president of the International Association of firefighters and a source close says he knows he can get the political pieces in place and now he just has to make a final gut decision. If biden joins the race, the unions endorsement would be a big boost from a key constituency. Hello, firefighters. Reporter watching it all, democratic frontrunner Hillary Clinton who had court the the same union but failed to lock in their support. Clinton is coming off of a strong week, getting a postdebate bump in the polls. Over the weekend she tried to build on that momentum in alabama. Who watched the debataton tuesday . Reporter meanwhile on saturdrd, the Vice President nt acceptpt a human rights awararin new york and was met with brbrf shouts of run, j, run. Run, joe, run. Reporter he gave no indication about his future plans, instead paying tribute to him to run before he passed as my son beau used to say, just keep moving forward. Reporter now, as for Hillary Clinton, she takes a break from the trail to prepare for a critical test. On thursday she testifies before the Committee Investigating the attack against the u. S. Consulate in benghazi. Biden watching all of it as he deliberates, well aware his window is quickly closing. Savannah, matt. All right, kristen, thank you very much. What is at stake for Hillary Clinton as she prepares to testify before that committee . Reporter well, matt, thats good question, and t t reality is the stakes couldndn be higher for Hillary Clinton. N. Thatsshy shes taking the prep if sheheoes well, shehe could turn the page not onlyy on questions surrounding her handling of the benghazi attack, but also to take some questions on the controversy over her emails, which shes going to be questioned about as well. Clinton cant afford any missteps or to lose her temper. Youll recall she did that momentarily the last time she testified. Now, as for biden, he could wait to make an announcement until after she testifies, but his supporters are urging him to announce a final decision beforehand arguing he could look calculating if he waits until her testimony, and that could undercut his argument that hes running for his own reasons and not because clinton is somehow a weakened candidate. Matt, savannah, back to you. Kristen, thanks very much. As the president ial race moves forward, we want to let you know that donald trump w wl be joining u u for a live town hall ming with new hampspsre votete. That is next monday, a week from today, right here on today. Now to a story mentioned at at l. A. X. Overnight triggered by a dispute between passengers reportedly over a reclining seat. Nbcs tom costello covers aviation for us. Tom, whats this one all about . Reporter that was flight 2010, 137 passengers on board, and witnesses say one of the passengers tried to put her seat back and the passes jer sitting behind her didnt like that at all. Flight 2010 declaring an emergency. Reporter a Southwest Airlines 737 heading from los angeles to San Francisco forced to make an Emergency Landing sunday evening after an altercation between two passengers. One passenger on the flight tells nbc news that minutes after takeoff a man began choking a woman sitting in front of him after she tilted her seat back. She screamed for help, and the crew came to her aid. Shortly after, the pilot radioed back to l. A. X. And returned safely. Evidently weve got two passengers that are in a physical altercation, so we need to get turned around and back to l. A. X. Reporter another witness posting this photo to instagram showing several police cars on the tarmac as the plane arrived. Southwest airlines confirmed the pilot made the Emergency Landing because of a, quote, rapidly escalating situation between two passengers. The airline did not provide further details on the altercation, though, witnesses say the man was removed from the flight and detained. The fbi confirms one individual was, in fact, brought in for questioning after the incident, but so far no arrests. Southwest says the remaining 136 passengers arrived in San Francisco about five hours late. Guys, back to you. What an ordeal for them. Tom, thank you. Crazy. Another major story this morning, a Senior Leader of an al qaeda cell has been killed in a u. S. Air strike in syriaia nbc chief Foreign CorrespondentRichard Engel has s e latest on this. Richard, good morning. Reporter good morning. His name was sanafi alalasr, a saudi national, someone volved in financing for al qaedas franchise in syria. U. S. Officials confirmed over the weekend that he was killed late last week by a u. S. Air an american official told me that al qaeda has been trying to reinforce its operations in syria, sending in more people, sending in top level organizers like al nasr and that his death could be a blow to efforts by al qaeda to reinforce the operations in syria. There is, however, another way to look at this. There is something of a rivalry going on right now with both the u. S. And russia carrying out air in syria, against al qaeda operatives in n ria, and this time this weekend u. S. Officials say it was us, not moscow, that killed this senior Al Qaeda Ader in syria. Matt, savannah, back to you. All right. Richard engel on this story. Richard, thank you very much. Here at Home Millions are waking up to the coldest temperatures of the season so far. I knew it was cold when matt wore a snuggie into the studio this morning. Oh, my. Thats a real treat we all wait for. Ive got to show you some weather video weve got in as snow in upstate new york. Right near my alma mater oswego. Mexico, new york, not too far got 9 inches of snow. Snow stretching from pennsylvania all the way into new england today, but its okay. Things are going to get warmer, all right, so dont get too upset. Lets show you why. The good news is weve got this dome of High Pressure. As it slides to the east, we get a returnrnlow of air. Thats warmer air. R. The jet stam up to the north. Look. Chicago by wednesday is 76 and st. Louis 84 and tulsa, 84, nashville 78. 30 Million People under some sort of a freeze or frost warning this morning or watch from new haven to cleveland down to huntsville, but the good news is, look at this. We see a change. Todays highs, anywhere from 5 to 15 degrees below normal. But watch what happens as we get into the week. That return flow of air, new york, 75 by thursday. 74 in norfolk. 7 76 on thursday. Charlotte will see a temperature of 77. Atlanta, youll get up to 78 degrees. So the good news is you can put the snuggie away. We always know it gets real when you bring in the union suit with the drop seat. Thats when its really cold. You two going on tour . Were working on ouou materialal all r rht. Al, thank you very much. Now, fallout to yet another tragedy on the football field. A High School Junior collapsed during a game in texas over the weekend. He was rushed to the hospital and later died. The sixth High School Player to die this year. Nbcs Janet Shamlian is in alto, texas. Janet, good morning to you. Reporter matt, good morning. What happened on the football field here in this town of only about 1,200 people is having a Ripple Effect across the country this morning as a number of schools are now debating the future of their football programs. Season, the number of students who have died playing the game has never been higher. This morning following the tragic death of 16yearold Cameron Matthews, the question being asked why is this happening so often in the ail Toe Community is taking it hard. Everybody was hurt. Reporter 6 foot junior collapsed on the sidelines in the middle of friday nights game after telling teammates he felt dizzy. He wasedevacked to the hospital where he died the e xt day. Officials say he suffed an aneurysm though the exact cause ofis death has not been determin. Camerons friends and family are heartbroken but dont believe football is to blame. They fl that if cameron wasnt on the football field, cameron could have been in a car and this would have happened. Reporter matthews is the sixth High School Football player nationwide to die after a game since the school year started. Six players so close to the beginning of the school year is unusual. Last year five died from footballrelated injuries all season. Three deaths a year is the average. In an effort to reduce deaths theres a limit of 90 minutes a week for full contact play, and at ail toe high, the coach says theres a trainer at every game. Everybody just automatically assumed that it had to have been a football thing, you know. He never took a shot to the head. It wasnt anything. It was just a it happened on the football field. Reporter those who knew him say Cameron Matthews was a talented athlete, terrific student, and much more. Anybody that has children of f their own,n,hats how you want them to turn out, like cameron. Hes just a great kid, great kid. Reporter grief counselors will be here at school today as students and faculty try to cope with this tragic loss. Matt, back to you. All right. Janet shamlian in texas for us this morning. Janet, thank you very much. Now to natalie for the other news of the morning, starting in the middle east. Thats right. Good morning, everyone. Secretary of state john kerry calling on israeli and palestinian leaders to take urgent action to end the violence in israel and the west bank. Nbcs chief global correspondent bill neely is in jerusalem for us this morning. Bill, good morning. Reporter good morning, natalie. Amid more violence, a tragic story this morning of a young man who was waiting at a bus station when this happened. A palestinian grabbed a soldiers gun and opened fire, killing the soldier and injuring five policemen and four others. The crowd thought the young man who was eritrean had something to do it. First of all, a security man shot him, and then the crowd turned on him and beatt him soo dly that he died later in the hospital of his injury, another example houf the innocent aree gettinggaught up in the fear and the fury here. And a furious argument here today over a concrete wall 15 feet high that israel is building around one arab palestinians are calling it collective punishment, and its not clear how effective it would be in stopping these attacks anyway. Meanwhile, secretary of state john kerry this morning called the violence senseless and called on israeli and hell meet them later in the week, but it really isnt clear these leaders can have in stopping the killing. Back to you, natalie. All right. Jerusalem for us. Thanks. Major changes on the way when it comes to owning drones. If youre thinking of buying one, the government is about to with the department of transportation. The new rules will be announced today. The move comes as a number of drones i ithe nations skies h h increasesedramatically, leading to closesealls with passenger planes, evev police helicopters. S. A wild story this morning from the wild, w wd west. At least one person is being treated at an arizona hospital after being shot with bulllls during a gun fight reenactment in the town of tombstone. Officials say the skit was supposed to involve blanks, but one of the actors guns fired live rounds during a standoff. An actor is undergoing surgery to remove a bullet. Other rounds struck a bystander whose condition is not known. A driver in texas may face dramatic highway crash in which a car veers into a motorcycle that was trying to pass. It. All of it caught on another riders helmet cam, and you can see the motorcycle approach a group of cars. It tries to pass them, and then the van veers right into the motorcycle sending the motorcyclist and the female passenger stumbling. The motorcyclist suffered cuts and the passenger has a broken wrist and arm lacerations. When confronted the driver of the sedan said, quote, i dont care. Texas Highway Patrol now, of course, investigating. And t tre was extra drama sunday night as the new England Patriots faced t t indianapolis coltings for the firir timim sincnc lastseasons famous deflategate game. And the man at the center of the controversy, pats Quarterback Tom Brady had a pretty good game throwing for more than 300 yards and three touchdowns. The cos made a game of it, but it was new england that came out on top, 3427. And, of course, if you havent heard by now the new york mets now leading 21 against the chicago cubs. The National League championship series after sunday nights game right here in new york. The mets didnt waste any time getting on board. Already up 10 in the first inning, Daniel Murphy once again hitting a tworun homer over the wall in the right. That made it 30. They went on to win by a final of 41. Game three, chicago, tomorrow night. It is on. 20 lead, mets back to the future prediction is in jeopardy here. That needs to get going. Thats true. The little clip from the photograph movie back to the future 2. Where they predict the cubs would win. I was there saturday night. It was cold and it was rocking. Snuggie weather, you might say. Thats right. Shes onto the snuggie. Its a theme. It is, it is. How about y yr local forecast . How about that. Lets show you whats going on righgh now across the rest of the country. Look for wet weatherern the papafic northwest and also in the four corners. Gorgeous day along the east ast, tool will be a little on the chilly side. Look for breezy conditions in the northern plains. Were going to get to your local forecast coming up in the next 30 seconds. To clean the oceans, to start a movement, or lead a country. It may not be obvious yet, but one of these kids is going to change the world. We just need to make sure she has what she needs. Welcome to windows 10. The future starts now for all of us. Our winds picked up as temperatures went up for our sunday. Highs siouxland to the low to mid 70s from sioux city east. This warming trend is going to continue monday a warm southwest into the upper 70s to near 80 degrees. A system will spread some clouds into chance of a few showers and maybe a thunderstorm. That system cools us off a bit mid to late week with another chance of rain arriving in western siouxland by thursday and