Pasadena, Maryland triangular craft sighting (case 16539)

A MUFON field report reproduced in two Bigelow Aerospace Advanced Space Studies (BAASS) monthly reports described a sighting at a home in Pasadena, Maryland, at about 03:15 on April 16, 2009 (April report). A MUFON STAR team Category 2 deployment was activated on April 20, 2009, with a field investigator as lead (April report). The same report appears in the June 2009 report as case 16539, CMS log number US-04162009-0016 (June report).

The witness was a laboratory director who had lived in the house since September 2008. He and his fiancée, a radiology technician, both held chemistry degrees (June report). The report says she woke him because of a loud humming. He first thought it might be a street cleaner or a utility truck. He then saw a very large, black triangular craft with no lights, which he compared to a stretched-out F-117 Nighthawk with a wingspan of about 300 feet. The report says it moved slowly southeast and took about 17 minutes to pass over the house. He described the hum as constant and like an electrical transformer (June report). A neighbor told him he had also heard the humming and did not want to discuss it further (April report).

The investigator contacted several sources. A county public works office replied on April 20 that it would not sweep streets at that hour (April report). Attendants at a 7-Eleven and an Exxon station reported that nothing strange was heard or seen. Police, newspapers and BWI had not replied or the inquiry was still in process (June report). The report listed BWI 8 miles northwest and Fort Meade 9 miles west-southwest, and gave weather for the night as 39 °F, wind from the west-northwest at 3.5 mph and mostly cloudy (June report).

In his conclusion the investigator found the witness credible and logical and not interested in the UFO subject. The witness wondered why the military would build such an aircraft, and said most neighbors worked in the military, law enforcement or government contracting (June report). The investigator saw no high power lines nearby (April report). He cited a 2005 report of a black triangle with no lights at Owings Mills, Maryland, about 20 miles north-northwest (June report). The April report states that all cases remained under MUFON investigation (April report). Neither document gives an identification.