Biggest message is about courage under fire -- don't give up just because the odds are against you, and find the strength to face your enemies and help others, even if it means endangering yourself.
Strong violence and a high body count. People die in airplane explosions, are thrown off of planes and helicopters, get shot in the heart with an arrow, and are killed at gunpoint or with a rocket-propelled grenade-type of weapon. Men beat up the president and a 13-year-old boy who's helping him. The boy has a dead deer's head strapped to his backpack throughout part of the movie.
Infrequent strong language includes "s--t," "ass," "damn," and one notable "motherf--ker."