The objective of this study is to determine the effectiveness of using an active sensor/suction technique to identify and remove low-speed streaks from a turbulent boundary layer in order to reduce skin friction. An experimental investigation was conducted in both water and wind tunnel facilities to visualize streak development and removal and also to obtain preliminary quantitative drag reductions of an active sensor/suction system. Flush mount hot-film sensors were used with a detection algorithm to identify lowspeed streaks and activate suction ports to remove the streaks in their growth phase. Suction coefficients ranged from 0.0005 to 0.015. Hot-wire boundary-layer measurements were used to determine skin friction drag. The preliminary results show significant skin friction reductions are possible using low suction rates and reduced mass flows.