SAN FRANCISCO (MarketWatch) -- Crude-oil futures jumped more than $3 in mid-morning trading Friday after news reports that U.S. military force fired at an Iranian boat. A ship contracted by the U.S Military Sealift Command fired at least one shot toward an Iranian boat, Reuters reported, citing an unnamed U.S. defense official. More details were not yet available. Crude-oil for June delivery gained $3.04, or 2.6%, to $119.10 on the New York Mercantile Exchange after the news. Crude was trading higher before the report but was up less than $3.