According to the Museum’s website (which also provides technical specifications):

THIS AIRCRAFT IS ON LOAN FROM THE NATIONAL NAVAL AVIATION MUSEUM, PENSACOLA, FLORIDA
This small and speedy attack aircraft was designed in 1954 by chief engineer Ed Heinemann of Douglas and earned the nickname “Heinemann’s Hotrod.” It was a jet successor to the prop-driven Douglas A-1 Skyraider. The A-4’s were produced for more than 26 years in many variants. They served the US Navy and Marines in carrier and land use with major roles during Vietnam.

This model (the 210th built) replaced a similar model which was destroyed in the 1979 tornado at the museum. It came from Memphis, TN, Naval Air Station.

Taken with a Sony RX-100 M3.