NEW : Air Force helicopters airlift stranded residents from Port Arthur area . NEW : Three HH-65C helicopters from Coast Guard Air Station Houston rescued more than 20 people and were continuing to fly round-the-clock rescue missions until weather grounds them , said Petty Officer Renee Aiello , a station spokeswoman . Many of those rescued were motorists stranded on flooded roads . Coast Guard , Coast Guard unable to rescue 42 people stranded on freighter . Active-duty military has 22 search-and-rescue helicopters on standby .
NEW : Air Force helicopters airlift stranded residents from Port Arthur area . NEW : Many of those rescued were motorists stranded on flooded roads . Coast Guard , Coast Guard unable to rescue 42 people stranded on freighter . Active-duty military has 22 search-and-rescue helicopters on standby .