The eyewitness could be wrong, and the crew has been known to leave and come back especially if there is a gap of several hours between groups of teams. I wouldn't assume any team is last. The camouflage jackets/backpacks doesn't necessarily mean military or former military as that sort of thing can be bought at outdoor/hunting type shops by people who aren't military at all. But I agree that team wasn't clearly photographed if at all at the airport in L.A. or Miami.