https://www.milsurps.com/images/impo...ba3ba6e5-1.jpg
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Just back from the obstacle course...so many things here... Those two with what look like the Fairburn-Sykes knives? I don't think they're M3s, Marine Raider Stiletto? Then a carbine with a bayonet lug...times two.
Post-ww-2 most likely, carbines have adjustable sites and bayonet lugs not w-2 era.
If it wasn't a different time/era I'd think the short fellow in the center might be Flaherty(SP).