VIRGINIA BEACH, Va. (AP) Four of the seven Virginia-based Navy ships that have received deployment orders in the past week headed out to sea Sunday as a military buildup continued ahead of a possible war with Iraq. The amphibious dock landing ships Portland and Ashland set sail from the Little Creek Naval Amphibious Base, and the amphibious assault ships Kearsarge and Bataan left Norfolk Naval Station. The ships and three others that left Friday can carry a total landing force of about 8,000 Marines. As the Ashland pulled away from its dock, a couple dozen family members waved from a cold, wind-swept parking lot. Kerri Rodriguez wiped away tears as she said goodbye to her husband, Petty Officer 2nd Class Edgar Rodriguez. She doesn