The US Navy is setting new guidelines for reporting 'unidentified aircraft' entering the US aerospace so no records will be 'dismissed'.
The new policy will be a significant new step in creating a formal process to collect and analyse the unexplained sightings and destigmatised them, reported Politico .
A Navy source said in the statement: "There have been a number of reports of unauthorised and/or unidentified aircraft entering various and military-controlled ranges and designated air space in recent years.
"For safety and security concerns, the Navy and the US Air Force take these reports very seriously and investigate each and every report."
He also said the reports of any suspected incursions can be made to the right authorities.
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Chris Mellon, former Pentagon intelligence official and ex-staffer on the Senate Intelligence Committee, said it would be a 'sea change' to formalise reports of what the military now calls 'unexplained aerial phenomena' (UAP) rather than 'unidentified flying objects' ( UFO ).
He said information of the UFOs and UAPs such as satellite data or unusual radar sightings would normally be disregarded as the current systems automatically filtered and disregarded the information.
The development came after a growing interest from members of Congress that the Pentagon set up a dedicated office inside the Defense Intelligence Agency to study UAPs.
According to the report, the office has spent some $25million(£19m) into technical studies and evaluations of unexplained events.
One noted case is the USS Nimitz Carrier Strike Group in 2004 which Navy fighter jets were out-manoeuvered by unidentified aircraft that flew in what it appeared as "physics-defying".
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Prior to the guidelines, military leaders often get criticised for not treating such sightings as potential national security threats.
Luis Elizondo, the former Pentagon official and supporter of research into UAPs, said he was not impressed by tapproaches to report them.
He said: "If you are in a busy airport and see something you are supposed to say something.
"With our own military members it is kind of the opposite: 'If you do see something, don't say something'."
