David H. Lehman

DJ Resources LLC explores and develops several conventional and unconventional oil and gas. The company is headquartered in Denver, CO.

DJR Energy LLC operates as an oil and gas exploration and production firm. It focuses on developing oil and gas resources of the San Juan Basin of New Mexico. The company was founded in 2002 and is headquartered in Denver, CO.

AFCEA International is engaged in the provision of information technology, communications, and electronics services to military and government industry. The firm offers leadership, engagement, and networking opportunities. It focuses on cyber, command, control, communications, computers and intelligence to address national and international security challenges. The company was founded in May 1946 and is headquartered in Fairfax, VA.

The MITRE Corp. provides systems engineering, research and development and information technology support services. It offers federally funded research and development centers for the department of defense, the federal aviation administration, the internal revenue service and department of veteran affairs and the department of homeland security. The company was founded by Robert Everett in 1958 and is headquartered in McLean, VA.