the first American Rocket looks similar with the German V2, the Tomahawk looks similar with the V1, the most US fighters use Deltawing, similar to DR.Lippisch development, the Radar system of the F22 is similar to the Radar, thats development for the Eurofighter ( canceld, because to expensive, but finish ) and the Russian use this Technology sine 1987 aktive in the MIG31( Phased array Radar )
Jet Engine, from Germany
Lampyridae looks F117, but was earlyer in Germany !!!
http://images.google.de/imgres?imgurl=http://home.xmsnet.nl/hdejong/curious/Lampyridae%2520aero%2520testbed%2520front.jpg&imgrefurl=http://home.xmsnet.nl/hdejong/curious/Lampyridae.htm&h=541&w=787&sz=34&hl=de&start=20&um=1&tbnid=LwPBUUZFLR-ECM:&tbnh=98&tbnw=143&prev=/images%3Fq%3Dlampyridae%26svnum%3D10%26um%3D1%26hl%3Dde%26newwindow%3D1%26sa%3DN
In the end, of course all the engineers need to follow the physik rules of aerodynamik.
Without the second world war, and without the lucky position of the Island of America,and all of the technology stohlen after that, they would be India or China today.
Everyone should think about this.