I don't know if this qualifies for this forum but I wasn't sure where else to ask. I just saw a recruiting commercial for the Army Special Forces. They showed a scout/sniper team watching enemy movements and noted that they'd been at it for over a week. What I wonder is are snipers expected to literally not move for days at a time? Would that even be possible? Even taking in the least amount of water possible eventually you'd have to water the plants, right? How much strain does lying prone for hours on end put on the spine?