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B-17G Fortresses of the 546th Bomb Squadron drop their loads on the rail yards at Elsterwerda, Germany,



Elsterwerda durch die Alliierten und der Ort wurde von Tieffliegern angegriffen. Am 19. April 1945 wurden der Bahnhof und das Bahnhofsgelände bombardiert. Damals wurde ein im Bahnhof stehender Munitionszug getroffen, dessen Explosionen schwere Schäden auf dem Bahngelände, sowie im Stadtzentrum verursachten. Dabei wurde auch das obere Stockwerk des Bahnhofsgebäudes schwer beschädigt und später nicht mehr aufgebaut.

In short, a munitions train was his and blew the crap out of the station.[/QUOTE]
 
A NACA P-61 test craft at Moffett Field, 1948
I'm surprised there was any interest in the P-61 at this date. It was already obsolete.

View attachment 578344

P-61s were operated in their design role after the war and were even designated "F-61." It was hoped that a jet aircraft wouid replace it but the P-82 fulfilled a night fighter/ all weather interceptor role until the F-89 and F94 came around. But as far as this one:

From Wiki:

In 1948, the National Advisory Committee for Aeronautics (NACA) obtained a P-61C from Air Research and Development Command for a series of drop tests of swept-wing aerodynamic drones at Moffett Field, California. Much engineering data was obtained from these tests. An RP-61C, AF Ser. No. 45-59300, thus became the last operational USAF P-61 to be retired at the end of the NACA testing in 1953. A second P-61C (AF Ser. No. 43-8330) which was still flyable was obtained from the Smithsonian Institution by NACA in October 1950 for these tests, and remained in use by NACA until 9 August 1954, being the last P-61 in government use. This aircraft is now on public display at the NASM's Steven F. Udvar-Hazy Center. P-61B-15NO, AF Ser. No. 42-39754, was used by NACA's Lewis Flight Propulsion Laboratory in Cleveland, Ohio, for tests of airfoil-type ramjets. P-61C-1NO, AF Ser. No. 43-8357, was used at Ames as a source for spare parts for other P-61 and RP-61 aircraft.
 
Forget the P-61, why on earth were we still messing about with dirigibles in 1948?

Because they were good patrol and AEW platforms. NACA also used (and uses) a number of military aircraft for research purposes that may not be related to their military use. They've also used gliders and sailplanes, they still use ex-USAF B-57s, and once used an F-106 as a glider.
 

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