Dr. Roger Leir, expert in the field of alien implants (passed away, March 14th, 2014)

This is his segment from the Washington DC Citizen Hearings for Disclosure, organized by Stephen Bassett. Dr. Leir's experience spans decades and includes scientific evidence that people are being abducted and implanted.

source: https://www.youtube.com/watch?v=zciVJI4oUgk