Editor's note: Reporter Mark Walker interviewed Camp Pendleton's Lt. Gen. Samuel T. Helland last Sunday while flying home from a two-week visit with troops in Iraq, Afghanistan, Kuwait and other sites in the Middle East. Watch the video Helland, who heads Marine forces in that region of the world as well as Camp Pendleton’s I Marine Expeditionary Force, responded as follows in this excerpted transcript: What did you learn on your visits with the troops and commanders? Most of the time when I travel in the theater, I like to travel with a purpose. One of the objectives this time...