Original sentence: <ref name=BDN1974>.During World War II, the standpipe was painted olive drab for camouflage purposes, but was repainted white in 1949.While once open to the public, it was closed in the 1940s following an accident in which an 11 year old boy was killed when he fell while climbing on the beams under the stairway
Edited sentence: During World War II, the standpipe was painted olive drab for camouflage purposes, because of its proximity to Dow Air Force Base, but was repainted white in 1949.While once open to the public, it was closed during the war, following a 1940 accident in which an 12-year old boy was killed when he fell while climbing on the beams under the stairway