Brownie0486,
Do you think we'll ever know? For example, in Marchiko's first book, he teaches the new team to fire SW stainless model 66s. I would have never guessed that particular firearm, and a revolver to boot. Still, it makes sense, considering the times. It is stainless, and SEALs work around water, it would be sterile, and .357 Mag ammo is pretty easy to get anywhere since it's been around since 1935.
If you ask people what is used now, I'd guess most would say a H&K .45 SOCOM. After all, this is the pistol that the special forces asked for, and they tried it head-to-head with a pistol from Colt. It wouldn't seem right to have this expensive pistol evaluated, purchased and distributed only to be left at home for a stainless Kimber.
If it was my butt, I'd find a Browning Hi-Power, even though I'm not a big fan of the 9 x 19. It has enough ammo, magazines are made by everyone, ammo is world-wide, they don't have stoppages and since it too has been around since 1935, you could probably find spare parts laying on the ground.
Of course, some Syrian would say, "Hey, there's Ichabod's pistol."