Pablo, a military working dog, rests while his handler, U.S. Marine Corps Lance Cpl. David Pond (left), and Lance Cpl. Jesse Helsley (right), an engineer, both attached to Company I, Battalion Landing Team 3/8, Regimental Combat Team 8, investigate a possible improvised explosive device during a security patrol from their patrol base in Helmand province's Green Zone, west of the Nahr-e Saraj canal, April 5. Elements of 26th Marine Expeditionary Unit deployed to Afghanistan to provide regional security in Helmand province in support of the International Security Assistance Force.