SRL for [documents]: Mr. Good , who [documents] these things as best he can , provides an official explanation in the form of a memorandum from Chief of Staff George C. Marshall to President Roosevelt : `` 1,430 pounds of ammunition , '' he wrote his commander in chief , were expended on `` unidentified aircraft , '' flying at speeds as slow as 200 mph and elevations between 9,000 and 18,000 feet .
ARG-0: Mr. Good | R-ARG-0: who | ARG-1: these things | ARG-M-MNR: as best he can