.Part of the American strategy at Midway was to rely primarily on PBYs from Midway to detect the Japanese forces, allowing the carriers to concentrate on preparing for attack. This was particularly true for Enterprise and Hornet of TF16. And it worked in that PBYs flown by Lieutenants Chase and Ady spotted the Japanese carrier force approximately 200 miles NW of Midway. So here's my question: presumably they were intended to search out to their normal range of about 700 miles, so what did they do after spotting Kido Butai? I would think they would have worked their way around the Japanese force and continued their assigned searches - does anyone know if they did so? They don't appear to have sent followon reports as they presumably would if they lingered in the vicinity of Nagumo's force. This relates to the flight of Hornet's air group. Enterprise's Air Group 16 headed for the estimated position of the Japanese based on the PBY sighting reports, bearing approximately 239 degrees. Hornet's group took a heading of 265, apparently with the intention of searching for additional Japanese carriers (the initial sighting reports had identified only two)..Basically they were searching the area NW of Nagumo, which ought to have been covered by PBYs including Chase and Ady. Was there any reason to suspect that they PBYs had not adequately covered their assigned search area? Was there potentially a "blind spot" or "shadow zone" behind/NW of Kido Butai which justified Hornet's strike (less Torpedo 8) heading there instead of toward the known Japanese position?