[mojitojoe]

I’d assume the seals were in the water alongside the boat and signaled him from there. Probably by yelling “Jump!.
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That’s my best guess too. The Navy Seals are nothing short of incredible. Those guys are so tough and so well trained. I watched a special one time showing the training they went through to get to be a Seal. I can’t express how much I respect them.

[STARWISE]

KODIAK, Alaska (April 8, 2009) SEAL Qualification Training candidates wade out of the Buskin River after spending five minutes in the near freezing water during a re-warming exercise. Candidates completed the re-warming exercise after spending 48 hours in the Alaskan mountains learning how to navigate through the rugged terrain and survive the frigid conditions. The 28-day cold-weather training course taught in Kodiak is part of a yearlong process to become a U.S. Navy SEAL. (U.S. Navy Photo by Mass Communication Specialist 2nd Class Erika N. Manzano/Released)

[STARWISE]

KODIAK, Alaska (April 8, 2009) A cold weather training instructor monitors SEAL Qualification Training candidates while they spend five minutes in near freezing water during a re-warming exercise. Candidates completed the re-warming exercise after spending 48 hours in the Alaskan mountains learning how to navigate through the rugged terrain and survive the frigid conditions. The 28-day cold-weather training course, taught in Kodiak, is part of a yearlong process to become a U.S. Navy SEAL. (U.S. Navy Photo by Mass Communication Specialist 2nd Class Erika N. Manzano/Released)

[Finny]

Yep. It seems to me that SEAL training alone is an act of heroism.