(at around 51 mins) In one of the sequences, stunt coordinator Alex Daniels was shown in a picture hung up on the wall where Ashton Kutcher was looking. The photo of Daniels was taken in his years spent as a lifeguard.
The opening story of the helo rescue gone bad was loosely based on a real event that occurred August 7, 1981. The crew of CG1471 from Airsta Kodiak was responding to a distress call of a fishing vessel near Prince William Sound. As the crew attempted to hoist the survivors of the boat, a wave hit the tail of CG1471 causing the helo to crash into the seas. A painting named "So Others May Live" hangs on CG Airsta Kodiak depicting the rescue.
(at around 16 mins) When the C-130 overflew the rescue chopper crash site, they chose to use the sound from a multiengine reciprocating aircraft such as a DC-3. The proper sound would have been from turbine powerplants; the C-130 has turboprop powerplants and they do not sound like reciprocating powerplants.
The motto quoted in the film and mentioned in the closing title card - "So Others May Live" - is not an official motto of the Coast Guard. However, Many members of the Coast Guard say this is an unofficial motto that many use anyway. It is very close to that of the creed of the Pararescue Jumpers, "That Others May Live", part of US Air Force Special Operations Command.
The actual motto of the Coast Guard is "Semper Paratus", Latin for "Always Ready" or "Always Prepared".
Several times, we're told that Fischer was offered swimming scholarships by "all the Ivy League Schools." Ivy League schools do not offer athletic scholarships. Also, the Ivies haven't had first rate swimming programs since Yale in the early sixties. An outstanding high school swimmer would be receiving scholarship offers from schools in conferences such as the SEC or Pac 10.
Ben Randall: I've been trying to peel the layers back for a while now and I, I just don't get it. I mean this kind of work seems a little remedial for someone like yourself. A big swim champ offered to every Ivy League, you give it up to be here with us. Why?
Many people say yes, and no. After Ben cut the cable and falls to save Jake, he is not seen resurfacing. Jake then narrates that the Coast Guard conducted one of the largest searches in Naval history, but to no avail. Weeks later, Jake saves a man who constantly asks where his companion is. The man explains "He wouldn't let go". This is implied that Ben's spirit perhaps lives on to rescue men left behind at sea.There is another ending where Ben does survive.
Q
Is the training in the movie the same of that in real life?
A
Yes, the producers and actors worked very closely with real members of the Coast Guard simulating the exact process that recruits would have to accomplish in order to become a Coast Guard. It is considered as some of the toughest training around in the 'Life Saving' community. In the movie they cast actual Master Chiefs to play roles to give it more authenticity.