Depends on if I'm at the ship or home on leave. If it happens while I'm on the ship, then that's easy - secure the brow and the armory, lock it down, wait 12 hours till everyone who's going to turn turns, then start clearing it one space at a time. Presto, instant floating sanctuary, made even better by the fact that Gaeta is a peninsula city - less than half a mile wide at the thinnest part of the attachment to the mainland, so all it would take is a couple hours, some extra hands, and a quick lesson in hot-wiring to effectively seal off a couple square miles of land from all outside waves of deadies.
At home on leave, well, I actually think I have more weapons and ammo than we have on the ship. Grab that, pack the Avalanche & trailer with gear and my dogs, then head to Susanville max security prison. It's one of the old jobs with actual concrete walls (not just fences) and gets snow for 4 months of the year - plenty of time to do any and all planting or renovations while the zeds are frozen.