I don't buy for a second that Jordan O'Neil could make it into the Navy SEALs
The Navy SEAL training is so tough that most of the men who do it don't make it through. Then this short, skinny woman comes along who was picked for the training because she looked so attractive and we're so supposed to believe she could make it through? She had no ambition to do the training and merely accepted the opportunity given to her. How could this little woman get through this training that most men that were much bigger and stronger than her couldn't do? It completely defies believability.
The training O'Neil goes through is for the Navy Combined Reconnaissance Team, which is a made up unit. I think they had her do that in the movie instead of going through actual SEAL training because no one could ever actually buy that she could make it through SEAL training. In this way the movie subtly reinforces how many people already feel about women in the military.