As of this 400th episode, Sean Harmon has played Young Gibbs seven times; Adam Campbell has played Young Ducky four times. No other actor has played either role.
The wedding suit is an exact copy of a suit Mark Harmon wore to an awards ceremony after playing college football at UCLA.
At the end, a young Sgt. Gibbs Class "A" uniform bears the following ribbons: Marine Corps Good Conduct Medal, National Defense Service Medal, Sea Service Deployment ribbon.
LEOPARD syndrome is an acronym which describes the symptoms of the syndrome: Lentigines -large number of brown or black freckle-like skin markings that mainly affect the neck and upper chest but can appear all over the body. Electrocardiograph conduction abnormalities -problems with the electrical and pumping functions of the heart. Ocular hypertelorism -eyes that are spaced wide apart. Pulmonary valve stenosis -narrowing of the pulmonary heart valve, resulting in less blood flow to the lungs and causing shortness of breath. Abnormalities of the genitals -such as undescended testicles. Retardation of growth -including bone growth problems of the chest and spine. Deafness -hearing loss of varying levels.