Nora Marshall News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Them a monthly fee. They maintain the software. This is very common in software businesses. There used to be something called 15 annual maintenance. Software companies and Cloud Companies that has migrated toward an annualized fee model or monthly fee model because we constantly update, create, maintain your equipment, your software on an ongoing basis which requires an ongoing commitment and relationship. We dont ask you to sign a contract. Youre free to come and go as you l. None of those things are prohibitedded in any way, shape or form. Furthermore, you can walk into radio shack or walmar...

Are completely survivable, marshall says. >> here they come. >> crucial to survival, human behavior. flight crews are better trained than ever to get people out. marshall pointed to the 2009 overrun of an air france jet in toronto and the hudson river landing. number of people killed in those incidents, sezero. she took me through an evacuation drill. >> why are you blocking the aisle to get you carry-on? leave it behind. okay, your closest exit, right here. >> two things -- i went the wrong way. >> how do you open that? okay, did you look at your briefing card? do you know how the exit opens?...

Training center in virginia where they investigate plane crashes all over the united states. there is one small team there dedicated to figuring out why people live and die in plane crashes. >> oh, my god. >> it looks unsurvivable. yet almost everyone did survive. >> i feel very lucky and blessed that we were able to get those people out in that time. >> the lesson, according to experts, you can make it out of even a horrific crash alive. part of the ntsb's elite go team of investigators sent to san francisco is a group looking at how people survive plane crashes. >> this is all about impact. ...

i'm wolf blitzer. you're in "the situation room." >> george zimmerman's lawyers relied on an unlikely witness to help them make their case today, that would be the father of trayvon martin. tracy martin was called to testify about his initial reaction to a 911 call made that night and whether he could identify the person heard screaming for help in the background. two detectives took the stand before him to describe what happened when they played that 911 call for tracy martin and then questioned him. >> and what did you ask him? >> i believe my words were "is that your son's voice i...

0 against a compromise verdict. >> diana tennis, christopher darden, thanks to both of you. that's it for "the lead." i now turn you over to wolf blitzer in "the situation room." thanks for watching. thanks, jake. the 911 call that's at the center of george zimmerman's defense. >> do you think he's yelling help? >> yes. >> all right, what is your -- >> trayvon martin's father testifies about the screams on that 911 call and whether or not they belonged to his son. did the victim's father help the defense's case? also, zimmerman's friends take to the stand. they're identifying what they belie...