Armageddon sucked something serious man
and yeah the phyisics were obviously totally screwed not to mention the question of how they got two shuttles designed specifically to take out a meteor they only discovered what a week prior? As far as I recall the current rather unsophisticated shuttles we have today (in comparison to those ones) took months to build lol.
Oh and to El-Phil as far as urban warfare goes if modern US and British level forces are any indication a decently trained army would do rather well without taking all that many losses in comparison to those they inflict on their enemies. And air power HELPS win wars it doesn't win them all by it's self as Clinton proved by randomly attacking various countries during his administration with missiles and fighters lol...now assuming that a soldier of the future will have even more advanced body armor then what we have to day odds are it would be a rather interesting ground battle lol