The Gainesville Fire Department truck used to rescue three Hall County firefighters injured in July after falling 44 feet in a collapsing ladder is now undergoing repairs as a precaution against the same kind of accident. Operators of the city’s aerial platform ladder truck raised concerns that worn cables and pulleys could cause an accident similar to the one this past summer. “Based on their concerns, and the recent accident with Hall County Fire Services, Tower 21 was removed from service and a reserve truck was used in its place,” Division Chief Keith Smith said Wednesday in a news release.