Complex sentence: Daniels meets with another Lieutenant named Cantrell-Pryzbylewski's commanding officer-who understands Daniels's situation as he let go of Prez at his father in law Major Valchek's request.
Split into simpler sentences: Daniels meets with another Lieutenant named Cantrell-Pryzbylewski's commanding officer-who understands Daniels's situation. Cantrell let go of Prez at his father in law Major Valchek's request.