Former US Navy pilot Ryan Graves told CBS's 60 Minutes that pilots training off the US coast sighted UFOs nearly every day. The show on Sunday explored a series of alleged recent encounters between US military pilots and UFOs, some of which were caught on film and have been released by the Pentagon. One encounter took place in 2014, when Graves and his F/A-18F squadron sighted UFOs in restrictive airspace near Virginia Beach, in southeastern Virginia. In 2019, US military pilots recorded UFOs in the same area in images obtained by the program. The Pentagon told CBS News that it had not been able to identify the objects. Graves said that such sightings were a nearly daily occurrence. "Every day. Every day for at least a couple years," he said of the sightings. He discussed an encounter off the coast of Jacksonville, Florida, in 2015, captured by one of his pilots on camera. "This is a difficult one to explain. You have rotation, you have high altitudes. You have propulsion, right? I don't know. I don't know what it is, frankly," remarked Graves. Lue Elizondo, the former head of a Pentagon project to investigate UFO sightings, said that some objects seemed to defy what was believed to be technologically possible. In April the US military certified the authenticity of several videos showing encounters between pilots and UFOs that had been published in the media. It followed the declassification last year of several videos showing encounters with UFOs.