Dennis the Security Guard was a TSA Guard assigned to the airport at Wichita, Kansas who talked to NCIS Agents Leroy Jethro Gibbs and Anthony DiNozzo in regards to the bags they were carrying. He let them bring weapons aboard but told them their bags had to go through the scanner with Gibbs expressing dismay at the move. Eventually, Donald Mallard showed up and told the Guard that the bags were his which caused Dennis to let the Agents go through to where Air Force One was.