[Bear_Slayer]

He would not shoot with his team mates so close

You can see in the one picture that the soldier holding the gal is leaning way back so as to not get hit by fragments, i.e, bullet, blood, skull.

This speaks to me that the gun held is the gun used.

[Al Gator]

When I look over it again, it appears what you are saying is right.

They may have had to hold her down so she didn't move around.

The weapon he is using wouldn't cause the damage as shown. If it did, then his mates would have gotten a good shower and maybe even some fragment souvenir in their own hide.

Again, something is out of sorts, but that's the nature of trying to figure these things out from just a few photos.