»Flying triangular UFOs in USA«

The study points out: “The United States is currently experiencing a wave of Flying Triangle sightings that may have intensified in the 1990s, especially towards the latter part of the 1990s. The wave continues. The Flying Triangles are being openly deployed over and near population centers, including in the vicinity of major interstate highways.”
...
he NIDS study includes the observation of a person in Port Washington, Wis., who encountered a large object that flew over her home at an estimated altitude of 500 feet (150 meters) in October 1998. Her eyeing of the clear starry night was interrupted as the craft came into her field of view.

pretty much explained as testing of the stealth bombers

one of these pics even has the 3 lights as shown in an earlier pic in this thread

the technologies to do both of those things currently exist

one of these pics even has the 3 lights as shown in an earlier pic in this thread

...but the other one had an extra one too, so that makes four

i saw a documentary about advanced military systems...this documentary showed a prototype fibre optic camouflage on a tank...the tank drove across the horizon and all that was seen was a slight bending of the light around the tanks outline

Tank Will Be Invisible
by Adrain Addison and Matthew Acton

Source: News of the World

July 19 1998

A DEATH-DEALING tank which is invisible to the enemy is being developed by defence experts.

Its surface will be covered with tiny light-bearing fibres which will imitate the scenery behind the tank.

Enemy soldiers will see only an unbroken line of sand, grass or trees . . . until they are blasted into oblivion.

The fibre-optic camouflage allowing the 'chameleon tanks' to blend with its background is outlined in top secret plans leaked from boffins at the US Defence Department. The vehicle will also have a silent-running engine.

Chris Foss, Land Systems Editor for Jane's Defence Weekly, said: "This is well beyond the current technology, but 30 years ago they said nobody would have a personal computer."

Scientists in the UK and the US have already in-vented an armoured vehicle invisible to radar-using technology from the angular Stealth bomber.

A prototype will take four years to build, but the army hopes to have vehicles in service by 2007.

Two Anglo-American consortiums one including British Aerospace are involved in a £3 billion race to develop the light tank. An initial design shows an angled vehicle - codenamed Tracer - small enough to fit in a Hercules transport plane.

Other mind-boggling military inventions are already with us - or in the pipeline.

COLOURCHANGING camouflage is being used by US snipers.

TINY sensors and cameras designed to look like plants or stones will transmit troop movements.

SWARMS of tiny aircraft some about six inches long will spy on enemy positions.

MINIATURE solar-powered mechanical ants will infiltrate bases and sent back vital intelligence. And similar "wasps" will carry tiny amounts of high explosives to sabotage power or telephone systems. An official at the Pentagon's Research Agency commented: "Many of the underlying technologies are available now. It's not all science fiction."

Scientists have already produced motors so small that 1,000 could fit in a 5mm square.