Their release was controlled by a panel at the navigator 's station known as a 90 - way that monitored the electrical connections to each bomb .
Their release was was said to provide 90 different sequences for releasing the 1,000 - pound bombs .
Their release was controlled by a panel at the navigator 's station known as a 90 - way that monitored the electrical connections to each bomb , and was said to provide 90 different sequences for releasing the 1,000 - pound bombs .