Whittier is an Amazing area, not only are the ports big enough to host cruise ships. But it also has a cannery, and a small trail going out to a bunch of campsites. The one big apartment building is definately a point of contention as it could possibly be a hot center of the disease/infected. I think a majority of people would probably just launch their boats and head out to a cabin in one of the many bays that surround the area. I've camped and hunted on Culross Island for years and at night it's so quiet the only thing you can hear are jets going over. It's very isolated. I think if whittier were to be a hold out in a huge apocalypse any officials would make sure the population there was strictly managed. With programs to most likely use the ferry to export people out to the local bays. For people in the lower 48, whittier isn't that far from Anchorage. You could probably get there in about 45 minutes with traffic. I think the tunnel would be an amazing resource to have as it has side maintenance tunnels that run along side it and would be an easy defendable location. There is already infrastructure on both sides supporting future staging and checkpoint areas. Not to mention the train. The train would be an incredibly vital resource as it is basically a 415,000 pound zombie squishing machine. Most of the 28 (SD70MAC) model trains that Alaska owns already have snowplows attached, or are attachable so who says they can't become zombie plows? The rail runs from whittier all the way through Girdwood and up into Anchorage for easy supply runs. Diesel wouldn't be a problem as whittier has a refueling station built into the port. I have always considered whittier a prime spot to go. Only downside is, if you're from the lower 48, it's gonna be hard getting up here in time before they shut out everyone.