Many people use a float to wind down or to get over jet-lag -- as a deeply relaxing float has much in common with a deep sleep.

CNN: Floating to good health

Equipped with sophisticated cameras, infrared sensors and other detection equipment, the small blimps often float 2, 000 feet over an area to keep a round-the-clock watch.

WSJ: Battlefield Blimps to Patrol U.S.-Mexico Borders

In 3-D, the robots turned and dipped their heads, and their enormous arms seemed to float over the band members.

NEWYORKER: Sound Machine