As Tsui Wai-fat descended into the murky waters off west Lantau for his umpteenth mission, he knew he could count on his training and 23 years of experience as a rescue diver to get the job done. \r\nIt was about 3pm on March 29. Three workers at the construction site of the Hong Kong-Zhuhai-Macau Bridge had plunged into the sea and gone missing after a platform they were working on under the viaduct collapsed. |