A Massachusetts-based company behind a pocket-sized surveillance drone has reportedly been awarded a contract by the US Air Force to develop similar drones that can be used in search and rescue missions.

CyPhy Works' Extreme Access Pocket Flyer boasts a 360 degree, high-resolution, panoramic camera, wireless communications, relay technology and measures only seven inches when fully configured, reported ArsTechnica.

The pocket-sized surveillance drone has an added feature, "virtually unlimited flight time" due to being tethered to a microfilament battery that supplies the power.

The drone is intended to help the US Air Force in its search for explosive devices and surveillance of tight spaces, like tunnels, without the use of radio frequency controls.

Helen Greiner, CEO of CyPhy Works, foresees the drones being used by law enforcement authorities in the near future.

"The initial targeted users of the Pocket Flyer are Air Force Pararescuemen, Special Forces units, and Federal Emergency Management Agency teams. But the company sees a much larger market long-term. Just like a camera, the best drone is the one you have with you. The market potential is one for every soldier, marine, police officer, SWAT team member, and many other jobs that expose people to danger," said Greiner in a statement on the contract.