DC Comics: Blackhawk #258 (1983)
 
For the past six days and nights, five Blackhawks have been investigating a Nazi movement of heavy research supplies into a castle in the Keslavik Mountains, while Blackhawk has stayed on the island and monitored Stan's recovery from his bullet wound.
 
Later that day, the 6-plane team arrives at the site in the Keslaviks, which triggers a ground-to-air rocket response and some equipment-destruction protocols among the German scientists, who then flee. The Blackhawks discover an opening in the ground which leads them to a gigantic tunneling vehicle, likely another Professor Merson invention, and some notes indicating that the Nazis have developed an atomic bomb. The squad dismantles Blackhawk's plane and reassembles most of it, in the tunnel made by the gigantic tunneling vehicle, which Blackhawk and Chop Chop then pursue. About a hundred miles, in some direction, from the castle in the Keslaviks, the mole machine returns along its own path, and wrecks the wingless Skyrocket, but Blackhawk and Chop Chop both dodge it, in that tunnel, for a second time. Blackhawk and Chop Chop then press ahead on foot and soon find, of all things, a ladder leading to a secret unguarded entrance to Himmler's personal office in his palace in Wewelsburg, in mid-Germany, where they arrive just as Himmler is murdering a key research scientist and securing for himself the sole copy of the secret recipe for an atom bomb.
 
In a scuffle with the guards, Bart and Chop escape with the bomb plans, in Himmler's personal courier's stolen BF-109, fly it to Blackhawk Island, without being followed or intercepted, they decode the plans, and find themselves standing on ground zero for the imminent A-bomb test, indeed a missile-launched A-bomb test. They evacuate the island, but the Allied nurse assigned to monitor Stanislaus is overlooked in the confusion, and killed in the blast, and the bomb plans are also destroyed, or so Blackhawk claims.
 
Blackhawk is the eponymous fictional character of the long-running comic book series Blackhawk first published by Quality Comics and later by DC Comics. Primarily created by Chuck Cuidera with input from both Bob Powell and Will Eisner, the Blackhawk characters first appeared in Military Comics #1 (August 1941).
 
Led by a mysterious man known as Blackhawk, the Blackhawks (or more formally, the Blackhawk Squadron) are a small team of World War II-era ace pilots of varied nationalities, each typically known under a single name, either their given name or their surname. Though the membership roster has undergone changes over the years, the team has been portrayed most consistently as having seven core members.
 
In their most well-known incarnation, the Blackhawks operate from a hidden base known only as Blackhawk Island, fly Grumman XF5F Skyrocket fighter aircraft, and shout their battle cry of "Hawk-a-a-a!" as they descend from the skies to fight tyranny and oppression. Clad in matching blue and black uniforms (with Blackhawk himself boasting a hawk insignia on his chest), early stories pitted the team against the Axis powers, but they would also come to battle recurring foes such as King Condor and Killer Shark, as well as encounter an array of gorgeous and deadly femme fatales. They also frequently squared off against fantastical war machines ranging from amphibious "shark planes" and flying tanks, to the aptly named War Wheel, a gigantic rolling behemoth adorned with spikes and machine guns.
 
At the height of his popularity in the early 1940s, Blackhawk titles routinely outsold every other comic book but Superman. Blackhawk also shares the distinction of being just one of five comic book characters to be published continuously in their own titles from the 1940s up to the 1960s (the others being Superman, Batman, Wonder Woman and The Phantom).
 
The comic book series has spawned a film serial, a radio series, a novel, and has been announced as a forthcoming Steven Spielberg feature film. A grounded version of Blackhawk named Ted Gaynor appeared on television in the first season of the Arrowverse series Arrow, played by Ben Browder.