gq: 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.
Question: 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? Question: What month and year was Apollo 13 launched? Question: What happened to the Apollo 13 crew to force them to use the LM as a "life boat" as it had been designed? Question: What happened to the Apollo program in for the rest of 1970 after the incident regarding Apollo 13? Question: What was redesigned during the Apollo program being grounded during 1970?