Boom! Headshot! x3

Justice is served. While we might want to believe that all conflicts can be resolved without violence, unfortunately for the idealistic, that's simply not true.
We don't want to encourage or reward undesirable destructive behavior.
Swift, decisive, incontrovertible action saved the day. (Granted, "swift" is in relative terms; ~5 days is swift compared to 30 days, 5 months, etc.)

Kudos to the captain, and the Navy.