The Quigley is something every Marine Officer Candidate experiences when going through Officer Candidates School. Among all the misery of Quantico, The Quigley stands out. Crawling underwater through a drainage culvert can be particularly stressful if you are the least bit claustrophobic or have a fear of drowning. The motto of OCS is Ductus Exemplo – Leadership by Example. It takes a special breed of men and women to become Marine Officers. Semper Fi!