Annie should have had a knife so she could have knifed her opponent under water. Augie's wife saving Annie was ludicrous. First the bullet wouldn't have penetrated more than several feet and most of the energy would be lost by that time. Also, unless the water was crystal clear nobody would take the shot because they probably couldn't distinguish whom they are aiming at. Ok, too much thinking.
Another ridiculous moment was after saving Annie, the wife says something to the effect of Annie being a great spy/operator. Yeah, ok.