Ok guys.. Marlin says I should be good. I'll take his word for it.

18" deep correct marlin?

As a side note.. if Marlin is wrong... and I should go up in a fire ball of awesomeness..

My guns and ammo are first come first serve.. But if you're gonna hang out for the guns and ammo.. you better bring a shovel.. We'll call it 'gas line roulette'