What is this mysterious device hovering over Langford Lake? Canon EOS 550D (T2i) · Canon EF 70-200mm f/2.8L USM 200 mm · 1/1000 s · f/11 · ISO 400 It’s a new aerator, carried in by a Kamov KA-32 helicopter. Canon EOS 550D (T2i) · Canon EF 70-200mm f/2.8L USM 70 mm · 1/1250 s · f/11 · ISO 400 …