Amelia Earhart Park, formerly part of Naval Air Station Miami, was still undeveloped land in this photo. It took Dade County decades to develop it into a decent park after getting the deed to the property from the U. S. Government in the early 1960's thanks to the efforts of Bill Graham, then a State Senator who developed the planned community of Miami Lakes. There isn't much development at all west of the Palmetto Expressway.
Opa-locka Airport, formerly Naval Air Station Miami and Marine Corps Air Station Miami, and now titled "Opa-locka Executive Airport", was deeded by the federal government to Dade County in the early 60's except for the federal property occupied by the U. S. Coast Guard which operates Caost Guard Air Station Miami there. In the early 70's, Opa-locka Airport held the #1 rank in aircraft operations for any airport in the USA (including major airports like Chicago O'Hare, Atlanta Hartsfield, New York JFK, etc.) for a year or two because of all the flight schools operating there and the huge number of Vietnam Era ex-servicemen getting their pilots licenses under the GI Bill. Operations went steadily downhill over the years as the GI Bill expired and flight schools closed.
The Association of Naval Aviation's Miami Air Show was held at Opa-locka Airport, featuring the Navy's Blue Angels and numerous performing acts plus acres of aircraft on static display, from the late 70's or early 80's until the late 80's or early 90's when the FAA prohibited high speed jet acts because of occupied residences adjacent to the airport. This air show had been held previously at the New Tamiami Airport in Kendall but I believe neighborhood opposition caused it to move. The county tried to replace Miami Air Show at Opa-locka Airport with an air show at Homestead Air Reserve Base but crowds were nowhere near sufficient to make an operating profit and future shows were nixed. The annual Ft. Lauderdale Air & Sea Show started a year or two later on the ocean at Ft. Lauderdale beach and it remains as South Florida's only annual large significant air show. Unfortunately there are no aircraft on static display at the Air & Sea Show like Opa-locka used to have. Ironically, a decision was made in 2006 to base the Air & Sea Show's performing military aircraft at Opa-locka Airport rather than at Ft. Lauderdale-Hollywood International Airport to avoid airline flight delays affecting large numbers of the traveling public. It is a once a year treat to see A-10's, F-15's, F-16's, F/A-18's, C-17's, C-130's, etc. back in action at Opa-locka Airport.
A large portion of Opa-locka Executive Airport's property on the west side along Red Road has been leased to developers who will be constructing stores, warehouses and other buildings on the open land in the southwest corner of the airport. The U. S. Postal Service has a large non-public regional mail sorting distribution center there. None of the existing runways will be affected by the commercial development but it will be another loss of open space like we've seen all over South Florida.