LOS ANGELES — Three Philippine nationals caught in a sting operation in their native country have been sentenced in Los Angeles for importing military-grade weapons to the United States, including a grenade launcher, a mortar launcher and 12 machine guns. Sergio Syjuco, 27, was sentenced to seven years in prison; Cesar Ubaldo, 28, received five years; and Arjyl Revereza, 27, got 4 ½ years, the US Justice Department said. All will spend up to three years under supervised release after they get out. After a four-week trial, a federal jury last March convicted the men of conspiring to illegally import the weapons and aiding and abetting their importation to the US. The men were indicted after authorities seized weapons at the Port of Long Beach in California in June 2011. – AP