Navy pilots report unexplained flying objects

Navy pilots reported to their superiors that the objects had no visible engine or infrared exhaust plumes, but that they could reach 30,000 feet and hypersonic speeds. In late 2014, a Super Hornet pilot had a near collision with one of the objects, and an official mishap report was filed. Lieutenant Graves and four other Navy pilots, who said in interviews with The New York Times that they saw the objects in 2014 and 2015 in training maneuvers from Virginia to Florida off the aircraft carrier Theodore Roosevelt, make no assertions of their provenance.

Source: www.nytimes.com