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As described in previous reports, this AASERT funding has provided support for graduate student training in high speed optical flow diagnostics. Funds were provided for the purchase of a 20 MHz rate framing camera (Hadland Imacon 792), which was used to capture a pair of rapidly sequenced Rayleigh scattering images, using a double pulsed Nd:YAG laser system purchased from parent grant AFOSR support. During the current reporting period, work has progressed on a synergistic program to develop a 'burst mode' laser system, which will, ultimately, provide the capability to obtain approximately 30 rapidly sequenced images. This work is closely coupled with the parent grant (#F4962O0-92-J-0217) and a collaborative AFOSR program with Profs. Alexander Smits and Garry Brown (F49620-93-1-0064).