I'm a old ex R.N.who suffers from raving clustrophobia[nobodys perfect] Therefore my options were limited. The Fire Service was out of the question,I dont even like to think about submarines. I hated wearing decontamidation gear.and thought zip fronted jerseys were sent from above. Have any Royals ex. or serving actually had to crawl through tunnels for real on active service?I had nightmares after seeing a film about the U.S. Army tunnel rats in Vietnam. Anybody know if they were all volunteers or detailed? Faced with the prospect I honestly do not know how I would have reacted. This is not a Nails type bite. how the fcuk is decontamidation spelt anyway?