Yeah, but that still doesn't explain how he was gonna get it off the ground without hitting a build and it is his FIRST FLIGHT hes a doctor like guy so he prolly know anything about flying a jet and he has no one to tell him ANYTHING and its his first flight, maybe if he had a 2nd or 3rd try, but not just right away.
And remember, these jets are 3 years old and been sitting idley plus who says they were even fueled?
It is completely reasonable that he did not fly a jet around shooting zombie-like creatures and dropping bombs the jet probably didn't even have.
And if he got the jet running and knew how to fly it and didn't die getting into the air, i would have probably tried flying away to see if places other than new york were zombied.