, John Yokley PTFS
Address: 1801 Research Blvd., Suite 310, Rockville, MD 20850 ..... Phone: (301) 654-8088 ...... John Yokley PTFS is the Founder and CEO of Progressive Technology Federal Systems, Inc. (PTFS), the leading enterprise content and library services platform. Mr. Yokley has over 30 years in the engineering field with several innovative software developments to his credit.