Original sentence: Although 193 PCF's were built, only about 110 served in Vietnam and the two training bases in California; with remaining PCF's being sold or given to nations friendly to the US.PCF-43 was lost to a rocket attack in 1969, and PCF's 77, 14, and 76 were lost to heavy seas
Edited sentence: Although 193 PCFs were built, only about 110 served in Vietnam and the two training bases in California; with remaining PCFs being sold or given to nations friendly to the US.PCF-43 was lost to a rocket attack in 1969, and PCFs 77, 14, and 76 were lost to heavy seas