To maximize the fidelity of the CFD wind simulation described in section 1.10.3, NTSB investigators conducted a mapping mission using an sUAS to obtain the imagery necessary to produce an accurate, photogrammetric 3-D model of the hangar, other buildings, and terrain near the area where the airplane was parked. 2019 February 14, National Transportation Safety Board, “1.13 Effective New Investigation Techniques”, in Aircraft Accident Report: Runway Overrun During Rejected Takeoff, Ameristar Air Cargo, Inc., dba Ameristar Charters, flight 9363, Boeing MD-83, N786TW, Ypsilanti, Michigan, March 8, 2017, archived from the original on 02 Jul 2022, page 46: