Always haters. If they didnt get in someone would b***h that they arn't threating.
You have to have 'Suspension of disbelief' - because yes, we KNOW the Military was PERFECT in protecting EVERYONE - even though they let half the population of charleston run out in the end. The military in charleston could'nt have every exit blocked, every tunnel covered, and with the skidders resolve I see no problem in them breaking the defenses and sliding by.
And how else was the overlord supposed to die? A random gunshot? Cmon.