This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Grumman FF NJ. Photo of preserved Grumman FF fighter Original caption First flown in the Grumman FF affectionately known as Fifi was noteworthy for its innovative design characteristics that marked great step forward in aircraft design first fighter with retractable landing gear an enclosed canopy for both cockpits and an all