We don't anticipate it will be a helicopter as we would understand a helicopter, but it will have some kind of rotary wings to provide vertical lift.

Built as a swing span, the bridge was converted in 1994 to a vertical lift bridge to increase the width of the navigational channel.

The squadron consists of seven flights: fixed wing, vertical lift, operations analysis, combat applications, special missions, instrumentation and mission support.

The world's heaviest and largest double deck vertical lift bridge. 4-lane road on upper deck, rail on lower deck (converted to trail).

The five vertical lift bridges and a railroad swing bridge, all within close distance of one another, made the manoeuvring tricky and the journey stressful.