What was DHS doing in Sandy Hook, CT? - UPDATE

• The Homeland Security Exercise and Evaluation Program
  Register by 9/17/10
  Location - Sandy Hook Fire Department:
  18 Riverside Road, Sandy Hook, CT 06106
• Sandy Hook Elementary School:
  12 Dickenson Drive, Sandy Hook, CT 06482

UPDATE:

“He was eliminating [investigators'] ability to figure out what websites he had gone to or who he might have been communicating with,” one investigator told Yahoo.