This muscle flexing is designed to reassure americas nervous allies, and its also a warning to russia not to try in europe the kind of land grab that it staged in crimea when Russian Forces invaded what had been part of ukraine and seized it for the kremlin. Americas response was to beef up both its own force in europe and its support of nato. Though president elect donald trump, who has called nato obsolete, says he now wants to pursue good relations with russia. Major general timothy mcguire. How quickly could the new president , as a gesture of goodwill to russia, turn this whole thing around and pull you all out again . Im not going to speculate on what the incoming president may or may not do, but i will tell you, this is in the interests of the United States army to build readiness. Reporter meanwhile, Vladimir Putin has already implied the european buildup is pointless. Its stupid and unrealistic, he said, to think russia would attack anyone. But for the u. S. And nato allies, extra deterrence never hurts. But that deterrence comes at a price and a hefty one. Last year the bill to the u. S. For bolstering European Defense came to 3. 4 billion. Liz palmer for us tonight. Liz, thank you. We now know the identities of four of the five people who were shot to death at the airport in Fort Lauderdale on friday. They ranged in age from 57 to 84. All were either on their way to or returning from a cruise. Five others remain in the hospital. The gunman made his First Court Appearance today. He was assigned a public defender and denied bail. David begnaud is in Fort Lauderdale. Reporter with a steely stare, Esteban Santiago was escorted into a federal courtroom. Feet shackled, hands cuffed, and shaking at times. He did not explain his motive and said he only had 5 to 10 in his bank account. This video obtained by tmz appears to show santiago firing randomly at Fort Lauderdale airport on friday. Santiago shot 11 people, killing five. When he ran out of ammunition, he dropped his weapon and surrendered. A Law Enforcement source tells cbs news santiago used this nine millimeter handgun in the shooting, it is the same gun the iraq war veteran had with him when he went to an fbi office in anchorage, alaska, last november claiming his mind was being controlled by u. S. Intelligence. He said he was being forced to watch isis videos. Santiago was committed for four days to be mentally evaluated. One month later he petitioned to get the gun back from anchorage police. Without a judges order to commit him, police say they had no choice but to return it. Karen loeffler is the u. S. Attorney for the district of alaska. There is a federal law with regard to having a gun by somebody who is mentally ill, but the law requires that the person be adjudicated mentally ill. This is not somebody that would have been prohibited based on the information they had that Law Enforcement acted within the laws that they had. Reporter David Weinstein is a former federal prosecutor. Was enough done with this guy . My gut tells me that they didnt do quite enough. They should have dug a little bit deeper to find out exactly what was going on inside his head when he gave them the gun and then when he asked for it back. Reporter in court today, santiago said he spent the last few years in anchorage, alaska, working as a security guard. Scott, prosecutors say he confessed to planning this attack and apparently chose Fort Lauderdale at random. David begnaud for us in Fort Lauderdale. David, thank you. Well, in orlando, the Police Department badly shaken by the massacre at the pulse nightclub is now dealing with the pain of losing an officer today. A manhunt is under way for her killer, and Omar Villafranca is there. Reporter Orlando Police officers stood at attention and saluted as the flagdraped body of Master SergeantDebra Clayton was removed from the orlando Regional Medical center. Orlando mayor buddy dyer. Shell be missed as a mother, as a wife, as a daughter, a sister. Reporter clayton was a 17year veteran of the force. The 42yearold volunteered for Police Community events, especially when kids were involved. This morning clayton was on duty at a walmart when she confronted this man, 41yearold markieff lloyd, wanted in the murder of his pregnant girlfriend in middecember. Orlando police chief john mina. There was a short foot pursuit, and as soon as she said stop, he basically opened fire on her. Reporter the killing set off a countywide manhunt with s. W. A. T. Teams and officers combing through neighborhoods. During the frantic search, Orange County sheriffs Deputy Norman lewis was killed when his motorcycle was struck by a van. The manhunt is now in its eleventh hour, and police are now focused on a nearby neighborhood where the suspect fled after he carjacked a vehicle from this parking lot. Scott, the reward for lloyd is now 60,000. Omar villafranca, thanks. 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All these guys sandbagging along here now, you think it can hold this river in . No. If the river wants to go, it will go. Theres nothing you can do about it. Emergency workers evacuated about 400 homes in reno and schools were closed after nevada declared a state of emergency. In california, hundreds were forced to flee the flooding and cars were crushed by falling trees. Mudslides kept road crews busy on the Pacific Coast highway and interstate 80, where it took dave wood and his crew ten hours to clear the mess. This is where the mudslide was at. Its five feet deep, 80 feet wide and 1,000 feet long. Reporter california also lost one of its oldest residents. The storm toppled a famous giant sequoia carved into a living tunnel in the 1880s. The Truckee River is now slowly beginning to recede. At the height of the storm, the water here in this park where im standing was another four or five feet higher and its not necessarily over just yet. Scott, there are another two storms headed this way. Carter evans for us tonight. Carter, thank you. Coming up next, what happens when you cram all your exercise into a weekend. For folks with busy schedule, exercise is often far down on the todo list, but dr. Jon lapook tells us tonight new Research Shows that you can still benefit from working out, even if its not an everyday thing. Open those hips on the squat. Reporter georgia kopani an elementary schoolteacher, spends two hours a week at her local gym working up a sweat, but the rest of the time, not so much. Its not easy because, you know, the only thing after a long day that you want to go and just sit down and rest. Reporter so she hired new York Sports Club trainer Stephen Ferguson to get her off the couch. 50 jump ropes. 50 . Im not getting sick so often. I feel better with my body. My confidence is better. Reporter kopani is a socalled weekend warrior, cramming all her exercise into one or two monster workouts. A study in jama internal medicine compared workouts and found over nine years weekend warriors had a 30 lower risk of death that inactive people. Those who exercised three or more times a week had a 35 lower risk of death. Both groups got at least the recommended weekly 2. 5 hours of moderate activity or 75 minutes of vigorous activity. If youre jogging, walking where you can still have a conversation, thats moderate exercise. Reporter dr. Jordan metzl practices Sports Medicine at the hospital for special surgery in new york city. When you do nothing and then put 60 or 90 minutes of a workout together as the only thing youre doing, you certainly are at more risk for overuse injuries. Reporter so you shouldnt jump into being a warrior, you should ease into it . We prefer a gentle warrior, somebody that eases into what they do. Exercise is the most powerful, safe and effective drug across the human condition. Reporter this is good news for weekend warriors, but, scott, theres still reason to do exercise on a regular basis, which helps a number of medical problems and just plain makes you feel better. Dr. Jon lapook. Doctor, thank you. Well, hollywood stars spent the weekend exercising their right to free speech. And today donald trump exercised his. Donald trump will join Ronald Reagan as the only president s with a star on the hollywood walk of fame. Mr. Trump did not have many fans among hollywoods elite last night. Entertainment tonight cohost Kevin Frazier was there. Reporter from the Golden Globes opening moment, the president ial election shared the spotlight. This is one of the few places left where america still honors the popular vote. Reporter but it was eighttime golden globe winner meryl streep who thrust it front and center. It was that moment when the person asking to sit in the most respected seat in our country imitated a disabled reporter, someone he outranked in privilege, power, and the capacity to fight back. Reporter streep never mentioned president elect donald trump by name but was referencing when he mimicked disabled New York Times reporter Serge Kovaleski at this november 2015 campaign rally. You got to see this guy. I dont know what i said, i dont remember. Reporter this morning mr. Trump in a series of tweets called the threetime oscar winner one of the most overrated actresses in hollywood and a hillary flunky, adding, he did not mock kovaleski but showed him groveling. When the powerful use their position to mock others, we all lose. Reporter reaction from social media also poured in. Actress Alyssa Milano called streep a true inspiration while Meghan Mccain tweeted, this meryl streep speech is why trump won. But actress viola davis, who introduced streep and won a globe for fences took a more reflective position backstage. There is no way that we can have anyone in office that is not an extension of our own belief system, so then what does that say about us . Reporter weve seen celebrities take on president s in a public forum before, but, scott, this is probably the first time hollywood has seen a politician so eager to fight back. Kevin frazier, thanks. And thats the overnight news for this tuesday. For some of you, the news continues. For others, check back with us a little bit later for the morning news and be sure not to miss cbs this morning. From the Broadcast Center in new york city, im scott pelley. This is the cbs overnight news. Hi, everyone. Welcome to the overnight news. Im demarco morgan. A page will be turned tonight in chicago as president obama delivers his farewell address to the nation. Thousands stood in line for hours in the bonechilling cold to get a ticket to the speech, which is a president ial tradition, dating back to george washington. Unlike former president s, mr. Obama will be giving his farewell address in his hometown. And he calls it a chance to say thank you for this amazing journey. But for many people, that journey is already over, and they are looking forward to the trump administration. Confirmation hearings get under way today for several of the president elects cabinet nominees. Nancy cordes has the story. Reporter two of the nominees go before the senate on tuesday, four of them on wednesday, and another four on thursday. They have been preparing for weeks now, doing mock hearings, involving mock senators and mock protesters. While the real senators are just as prepared, especially the democrats, to challenge them. Thank you. Reporter starting tomorrow, the polite meet and greets will give way to a grilling. Mr. Johnson, youre the head person on this entity, have you investigated this charge . Reporter first up, alabama senator jeff sessions, the nominee for attorney general who knows the drill. Nine others will follow this week alone, a pace thats drawn fury from democrats. There is no real chance to vet these nominees. Reporter democratic leader Chuck Schumer wants a delay. You had seven people confirmed the day president obama took office. All the papers were in, and they had complied with all of the rules. These nominees have not. Reporter he says the office of government ethics has not had time to examine each nominees finances for potential conflicts of interest. The director of that office expressed great concern last week, warning that he had not received even initial draft Financial Disclosure reports for some of the nominees. Part of the challenge is that so many of mr. Trumps picks are multimillionaires, even billionaires with vast holdings. The sole billionaire nominated by mr. Obama took six months to vet. I think theyll all pass. Reporter the president elect met at trump tower today with the senates republican leader, mitch mcconnell, who said there will be no change to the schedule. Everybody will be properly vetted, as they have been in the past, and im hopeful that well get up to six or seven, particularly a National Security team in place on day one. One of president obamas final orders as commander in chief was to send a huge combat brigade to europe. Tanks and other weapons landed in germany on their way to poland and eastern europe. The buildup is designed to deter vladamir putin from potentially testing the incoming president militarily. Elizabeth palmer was at the dock when the tanks rolled off. Reporter since the end of the cold war, the United States has been steadily drawing down its military presence in europe. But here in northern germany, right now you can see thats no longer the case. In fact, its quite the opposite. All the massive hardware of a combat brigade arrived in germany over the weekend and started rolling east toward poland where 4,000 american soldiers will be waiting for it. This is the first buildup of american soldiers and weapons in europe in nearly 30 years. This impressive display of military might is designed in large part to reassure americas nervous european allies that the u. S. Military will be there, standing with them against russian aggression. Aggression and land grabs, like the 2014 invasion of crimea, when Russian Troops landed in what had been ukraine and seized it for the kremlin. Americas response has been to increase both its own force in europe and its support of nato. Though president elect donald trump has called nato obsolete and says he wants to restore good relations with russia. Major general timothy mcgwire. How quickly could the new president , as a gesture of good will to russia, turn this whole thing around and pull you all out again . Im not going to speculate on what the incoming president may or may not do, but i will tell you, this is in the interests of the United States army to build readiness. Reporter the commander in chief could reverse all this, but it would make months or even years. Meanwhile, vladamir putin has already implied this buildup is pointless. Its stupid and unrealistic, he says, to think that russia would attack anyone. But the American Military and its nato allies believe a little extra deterrence wont hurt. Once the new combat brigade has reached its final destination in eastern europe, it will start large, Multinational Military exercises with the armies of other nato countries. Democrats in the house and Senate Introduced legislation to create an independent commission to investigate russias attempts to influence the president ial election. Retired general Michael Hayden is a former director of both the cia and the