Frank Willis - Shortly after 1 am on June 17, 1972, Frank Wills, a security guard at the Watergate Complex, noticed tape covering the latch on several doors in the complex (allowing the doors to close but remain unlocked). He removed the tape, and thought nothing of it. He returned an hour later, and having discovered that someone had retaped the locks, Wills called the police. Five men were discovered and arrested inside the DNC's office