You can also click the Add layer mask icon at the bottom of the Layers panel (which, by default, selects Reveal All). Note that if you already have a layer mask on the layer, this icon will change to Add vector mask. Or you can click the Add a Layer Mask icon in the Properties panel.
The top American ace of all time, the U.S. Ace of Aces was Richard Ira Bong. He shot down 40 Japanese planes in the Pacific. Over the years, there's been a lot of ink spilled about the relative scores of German and American aces. 27 Americans shot down over 20 enemy planes.
One MiG-21 was shot down on 21 February 1972 by a U.S. Air Force F-4 Phantom piloted by Major Lodge with 1st Lt Roger Locher as his WSO based at Udorn RTAFB, Thailand. This was claimed to be the first ever U.S. Air Force MiG kill at night, and the first in four years at that time.he MiG-21 was also used extensively in the Middle East conflicts of the 1960s, 1970s and 1980s by Egyptian Air Force, Syrian Air Force and Iraqi Air Force. The MiG-21 first encountered Israeli Mirage III Cs on 14 November 1964, but it was not until 14 July 1966 that the first MiG-21 was shot down.