In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[Q]: What is sometimes combined with an RPG tube to keep from harming the user?, Context: Rocket-propelled grenades can be—and often are—used against hovering helicopters (e.g., by Somali militiamen during the Battle of Mogadishu (1993)). Firing an RPG at steep angles poses a danger to the user, because the backblast from firing reflects off the ground. In Somalia, militia members sometimes welded a steel plate in the exhaust end of an RPG's tube to deflect pressure away from the shooter when shooting up at US helicopters. RPGs are used in this role only when more effective weapons are not available.
[A]: a steel plate in the exhaust end


[Q]: In early August 2008, who was not working for the AFL, Ed Policy or David Baker?, Context: After 12 years as commissioner of the AFL, David Baker retired unexpectedly on July 25, 2008, just two days before ArenaBowl XXII; deputy commissioner Ed Policy was named interim commissioner until Baker's replacement was found. Baker explained, "When I took over as commissioner, I thought it would be for one year. It turned into 12. But now it's time."
[A]: David Baker


[Q]: Who failed to get the Lunar module ready on time?, Context: The problems with North American were severe enough in late 1965 to cause Manned Space Flight Administrator George Mueller to appoint program director Samuel Phillips to head a "tiger team" to investigate North American's problems and identify corrections. Phillips documented his findings in a December 19 letter to NAA president Lee Atwood, with a strongly worded letter by Mueller, and also gave a presentation of the results to Mueller and Deputy Administrator Robert Seamans. Meanwhile, Grumman was also encountering problems with the Lunar Module, eliminating hopes it would be ready for manned flight in 1967, not long after the first manned CSM flights.
[A]:
Grumman