Complex sentence: In 1981, Haney and two Delta Force operators were deployed to Honduras to train Honduran Special Forces when they were sent on a mission to intercept and destroy a group of Honduran communist guerrillas that had infiltrated the country from Nicaragua.
Split into simpler sentences: In 1981, Haney and two Delta Force operators were deployed to Honduras to train Honduran Special Forces. They were sent on a mission to intercept and destroy a force of Honduran communist guerrillas that had infiltrated from Nicaragua.