The results of an investigation into the suicide of a Marine that suggested his unit might have a “drug problem” and highlighted a hostile work environment were withheld from the Marine’s family for an “unacceptably long time” spanning months, according to documents and letters obtained by The Washington Post. Cpl. Jonathan M. Gee, 22, hanged himself early Aug. 29, 2015, at the Marine Corps’ Henderson Hall, near the Pentagon, after a night of partying, the investigation found.