Weather Data Marine Corps Sgt. Nathanial Cunningham, a meteorology and oceanology analyst forecaster with 1st Intelligence Battalion, I Marine Expeditionary Force Information Group, analyzes information and weather data to generate a forecast at Marine Corps Base Camp Pendleton, Calif., April 20, 2020. The unit’s daily weather forecast is used by local commanders during planning and also by I MEF units conducting operations worldwide. SHARE IMAGE: Download Image: Full Size (3.63 MB) Photo By: Marine Corps Cpl. Dalton S. Swanbeck VIRIN: 200420-M-EC058-1027.JPG Photo Gallery