Question #1 (to 4/C Schnappinger): What is the detect to engage sequence?

Question #2 (to 4/C Schnappinger): What are the differences between passive and active sonar?

Question #3 (to 4/C Schnappinger): There are many platforms that can subhunt - name three and give an advantage and disadvantage.

Question #4 (to 4/C Schnappinger): An aircraft carrier specifically deploys which aircraft first and give the reason why.