generate questions: The success of the first two landings allowed the remaining missions to be crewed with a single veteran as Commander, with two rookies. Apollo 13 launched Lovell, Jack Swigert, and Fred Haise in April 1970, headed for the Fra Mauro formation. But two days out, a liquid oxygen tank exploded, disabling the Service Module and forcing the crew to use the LM as a "life boat" to return to Earth. Another NASA review board was convened to determine the cause, which turned out to be a combination of damage of the tank in the factory, and a subcontractor not making a tank component according to updated design specifications. Apollo was grounded again, for the remainder of 1970 while the oxygen tank was redesigned and an extra one was added.
What happened to the Apollo 13 crew to force them to use the LM as a "life boat" as it had been designed? {sep_token} Along with one veteran, what other two types of crew could be included in lieu of veterans after the successful landings of Apollo 11 and 12? {sep_token} What happened to the Apollo program in for the rest of 1970 after the incident regarding Apollo 13? {sep_token} What was redesigned during the Apollo program being grounded during 1970? {sep_token} What month and year was Apollo 13 launched? {sep_token}