Fence-jumping incident prompts Homeland Security review . The U.S. government has been investigating the incident, which occurred in a remote area of southern Afghanistan on July 5. Canine agent was slowed because he was on his cell phone , review says .
Fence-jumping incident prompts Homeland Security review . It finds Secret Service alarm and radio systems did n't work as planned . Canine agent was slowed because he was on his cell phone , review says .