Sympathetic detonation killed 320 sailors and injured 390 others in the Port Chicago Disaster of July 17 , 1944 at the Port Chicago Naval Magazine in Port Chicago , California . During the 1967 USS Forrestal fire , eight old Composition B based iron bombs cooked off . The last one caused a sympathetic detonation of a ninth bomb , a more modern and less cookoff-susceptible Composition H6 based one
1967 USS Forrestal fire
1967 USS Forrestal fire
Sympathetic detonation