A wounded warrior who was awarded the nation’s third highest honor for valor last week is the same injured Marine Delta Airlines issued a public apology to in December after staff members embarrassed him on a flight. Cpl. Christian Brown, a former squad leader with 1st Battalion, 6th Marines, was awarded the Silver Star aboard Camp Lejeune, N.C., on Friday. He is credited with heroic actions during the unit’s 2011 deployment to Afghanistan. On Dec. 7, Brown responded when a designated marksman was critically wounded in the head, calling in a medevac and leading his squad to where it was safe for…