The Ministry of Defence is facing calls to launch an official inquiry into a UFO sighting in Shropshire that was filmed by a soldier.
UFO experts believe the incident near Market Drayton is "particularly significant" because it came from a member of the military.
The MoD has confirmed it has been handed footage captured on a mobile phone by a corporal on guard duty at Tern Hill barracks on June 7.
Corporal Mark Proctor told The Sun he witnessed a "fleet" of objects objects zig-zagging across the sky at about 11pm.
The 38-year-old soldier, a member of the 1st Battalion Irish Regiment, said: "I was on duty in the guard room when the other boys outside began shouting.
"I went out to see what the commotion was about and could see 13 craft in the skies. They were like rotating cubes with multiple colours."
Former MoD UFO expert Nick Pope said that an inquiry to establish what had been seen by the witnesses was vital.
Mr Pope said: "Something quite extraordinary does seem to be going on in British air space at the moment.
"There has got to be an official inquiry into all this and we need a senior air force officer to take personal charge and oversee the inquiry."
Radar tapes, as well as footage of the incidents, should be examined as part of the investigation, said Mr Pope, who added: "It's indisputable that something was seen - the very fact that it was seen by military personnel over a military base makes it a national security incident."