Field sampling discussion
SHAW AIR FORCE BASE, S.C. -- Dr. Sheri Bettis, a chemist with FBI's Hazardous Materials Response Unit, talks with Shaw members about how scientific readings can be misrepresented March 18 during an FBI HMRU training class. Four FBI agents visited Shaw to give Airmen an overview of interactions, procedures and law as well as dissection of field sampling equipment and their pitfalls. (U.S. Air Force photo/Staff Sgt. John Gordinier)