Here is the UK Ministry of Defense Link to the recent de-classified UFO/UAP Briefing

[link to webarchive.nationalarchives.gov.uk]

In the MOD report it says, amongst a lot of other things that are indeed noteworthy:

"That Unidentified Aerial Phenomenon (UAP or UFO) Exist is indisputable. Credited with the ability to hover, land, take off, accelerate to astonishing velocities and vanish. They can reportedly alter their direction of flight suddenly and clearly can exhibit aerodynamics characteristics well beyond those of any known aircraft or missile - either manned or unmanned.

The Conditions for the initial formation and sustaining of what are apparently buoyant charged masses (of Plasma), which can form, separate, merge, hover, climb, dive, and accelerate are not completely understood.

Dependent on a color's temperature and aerosol density, it may be seen visually, either by it self generated plasma color, by reflected light, or silhouette by light blockage and background contrast.

Occasionally and perhaps exceptionally, it seems a field with, undetermined characteristics can exist between certain charged buoyant objects in loose formation, the intervening space between them forms an area, viewed as a shape, often Triangular, from which the reflection of light does not occur. This is a key finding in the attribution of what have frequently been called black "Craft", often triangular and up to hundreds of feet in length. - The UK Ministry of Defence"

Let me repeat that last part...

Occasionally and perhaps exceptionally, it seems a field with, undetermined characteristics can exist between certain charged buoyant objects in loose formation, the intervening space between them forms an area, viewed as a shape, often Triangular, from which the reflection of light does not occur. This is a key finding in the attribution of what have frequently been called black "Craft", often triangular and up to hundreds of feet in length. - The UK Ministry of Defence"