U.S. Air Force Capt. Matthew Rogers, 633rd Dental Squadron dentist, demonstrates reminds children of the importance of cleaning their tongue when they brush their teeth at the Langley Child Development Center at Joint Base Langley-Eustis, Va., Feb. 21, 2017. Dentists reminded children to brush their teeth twice daily, for two minutes each time. (U.S. Air Force photo by Staff Sgt. Teresa J. Cleveland)