Sucks for the attackers. I have actually come up with a plan for a dug in defense of my college with a series of evens that MUST happen to allow for it. Since I am in California, any attack would more than likely come from my West. Attackers have two options to continue along a rout of advance east towards Las Vegas. Either they use the Cajon pass, or they travel through the mountains. If they have armor, a path through the mountains will not be likely. So the pass is the only option. I would blow the bridges in the pass making it, well, unpassable. Combined with hit and run attacks on any bridge repair crews. The pass would be useless. This would force the hostiles to swing south along Interstate 10 through the coachella valley. This would bring them up from 29 Palms and past the Marine base. if they make it back to my area they would meet the Mojave River. On both sides of the dry river is a ridge. My college sits on the western ridge of the river with great views east. The Eastern Ridge sits about a mile from the western ridge. There are currently three bridges that cross the river. I would blow all three bridges. I would then fortify my campus as an artillery fire base and Head quarters. They could bypass us, but that would leave us in a position to hit their rear, so in reality they cannot bypass us. Any attack coming across the river will be bogged down in the soft sand of the dry river bottom. I would also mine the river bottom and place concertina wire to slow any infantry attack. Any armor that makes an attempt to enter the river valley would be lit up by TOW missiles before they got in firing range of our position. I would station a sniper in the elevator from the lower campus which is on the river front. I would also entrench Heavy Machine guns, Mortars, and TOW missiles along the ridge. Infantry would be on the lower campus with easy routes of retreat to the upper campus should shit go south. Should the lower campus fall, we would retreat to the upper campus. If they take the ridge then we fall back across the campus lake and engage from the science building. Should the last phase line across the lake fall we would disperse into the city and conduct guerrilla attacks on the bad guys. In the end, we'd f­u­c­k them up. Maybe not enough to stop them, but enough to make them reconsider their invasion.