The only kind of PBJ I like

I like peanut butter.  I like some jellies. I do not like peanut butter AND jelly.  Ergo, this is my idea of a good PBJ (technically a PBJ-1H I believe)

via http://ww2db.com/image.php?image_id=17239

MTech Sgt Lloyd M Staggs cleans the bore of a 75mm cannon mounted in the nose of a PBJ-1 Mitchell of Marine Squadron VMB-613, Kwajalein, April 1945. Note also the six Browning M2 .50 cal machine guns. ww2dbase

How did the USN and USMC end up with USAAF B-25s?  Were they impressed enough after the Doolittle Raid to finagle their own (mostly) land based medium twins?  Nope, it had more to do with some inter-service give and take:

The PBJ had its origin in an inter-service agreement of mid-1942 between the Navy and the USAAF exchanging the Boeing Renton plant for the Kansas plant for B-29 Superfortress production. The Boeing XPBB Sea Ranger flying boat, competing for B-29 engines, was cancelled in exchange for part of the Kansas City Mitchell production. Other terms included the inter-service transfer of 50 B-25C and 152 B-25D to the Navy. The bombers carried Navy bureau numbers (BuNos), beginning with BuNo 34998.  PBJ-1 stood for Patrol (P) Bomber (B) built by North American Aviation (J), first variant (-1) under the existing American naval aircraft designation system of the era.

Thanks for the assist Mr Wikerpedia!

So there you have it, a PBJ I can enjoy!