171027-N-NW255-1027 FORT WORTH, Texas (Oct. 27, 2017) Chief Musician Jennifer Krupa gives a master class to a trombone student at Texas Christian University. Krupa is a member of the U.S. Navy Band jazz ensemble, the Commodores, which is on a national tour through six states in the southern U.S. (U.S. Navy photo by Senior Chief Musician Melissa Bishop/Released)