In 1965 the military situation in the Mekong River Delta of southern Vietnam had deteriorated to such a degree that the decision was made to commit a joint US Army and Navy Mobile Riverine Force to the area.vietnam war, 1961-1975 -- riverine operations, american, inland waterway vessels, mekong river delta, navy mobile riverine force, us army

Patrolling the Mekong Delta's Bassac River in hot-rodded cabin cruisers called PBRs, the U.S. Navy's brown-water sailors in 1967 were like tigers waiting for the cage door to open. Then Lieutenent Commander Don Sheppard cut them loose.vietnam war, 1961-1975 - riverine operations - american, u.s. navy, brown-water sailors, mekong delta, bassac river