User blog comment:Elephant777/Long live the Queen, but how does she live? (Rexy)/@comment-1187034-20150308030514

The military never got a confirmation that the evacuation occurred in the game. So they may have never bombed Isla Nublar because they were unsure if there were survivors still around. This also explains why they sent Dr. Henry Wu and several others to go scavenge the remains of Jurassic Park to see if they could any survivors.