Firefighter! Daigo of Fire Company M Bk 14

Sengoku finally has acquired a second firefighting helicopter. Then disaster strikes during a reunion of Daigo's fellow Rescue trainees. While they're contemplating whether he's a changed man or just as hotheaded as ever, the chopper goes missing on its maiden voyage! Daigo joins the search. He locates the injured copilot, but where is the helicopter?