Toward the end of Into Darkness, there's a big ol' ship-to-ship slugfest near the Moon.
One would imagine that military-grade weapons firing that close to Earth would set off all sorts of alarms - especially given recent Klingon war posturing - and yet no in-system defense forces show up to say boo and figure out why things are exploding.
What gives? Was the Earth's defense force asleep or something?