
No, Lt. Schrank is NOT really for the Jets, on the long run
Hmmmm...that's debatable, Andy. Lt. Schrank
starts out being for the Jets ("I'll even lend a hand if things get rough"), but when the Jets refuse to disclose to Lt. Schrank the whereabouts of the rumble, Schrank immediately makes an about-face and begins to insult the Jets in reference to their ethnic/immigrant backgrounds ("Why don't you get smart, you stupid hooligans? I oughta take you to the stationhouse and throw you in the can right now! You and that tin-horn immigrant scum ya come from! How's your old man's D. T's, A-Rab? How's the action on your mother's side of the street, Action?"), clearly indicating that he doesn't like the Jets much more than he likes the Sharks. Lt. Schrank then promises the Jets and Sharks: "I'll find out where you're gonna rumble! But be sure to finish each other off! 'Cause if ya don't, I will!" Later, when Schrank berates Doc about how he thinks 'understanding them" is a lot of nonsense ("Oh, yeah, understand them! That's what they keep telling me down at headquarters--understand them. Well...
you try keeping hoodlums in line and see what it does to you! and then angrily slams out of the store.