Complex sentence: Believing that the program could best be handled by the military, de Florez put Fulton in touch with the Office of Naval Research (ONR), where he obtained a development contract from ONR's Air Programs Division.
Split into simpler sentences: Believing that the program could best be handled by the military, de Florez put Fulton in touch with the Office of Naval Research. Thanks to de Florez's interest, Fulton received a development contract from ONR's Air Programs Division.