This B-26G played a key role in the development of a new USAF airplane. What was the development goal of this B-26, why was it important to the new plane, and for what new airplane(s). (Only one needed...there were three different planes using the B-26 testing)

__________________
__________________________________________

“The first lesson is that you can't lose a war if you have command of the air, and you can't win a war if you haven't.” - General Jimmy Doolittle