According to ESRB, this game contains: Violence
Parents don't have anything to worry about. The only violent bits to be seen are enemy planes being shot and hostile emplacements getting blasted. There is no questionable language and no sexual content.
Flight game fans would do well to look elsewhere unless you absolutely must own every game in the genre. It's a lifelessly limp game that doesn't offer anything you haven't already seen before (and better) multiple times.
Gamers on a budget should skip this title altogether. It can be completed in one afternoon, and has very little replay value. Rent it if you must, though your dollars would be better spent elsewhere.
Deaf and Hard of Hearing gamers shouldn't have any problems. Text accompanies all of the cutscenes, and there are no significant auditory cues.