Diving icon's ashes spread here today Inventions touched all uses of scuba, re-breathers BY ADAM LINHARDT Citizen Staffalinhardt@keysnews.com The ashes of the man responsible for developing what evolved into the most advanced scuba systems used by today's Special Operations Forces, as well as leading marine researchers and explorers, will be spread this morning in the waters off Key West. Christian J. Lambertsen was a medical student in 1939 when he invented his Lambertsen Amphibious Respirator Unit (LARU), a forerunner of modern dive re-breathers used today by the Army Green Berets, Navy SEALs and deep-sea explorers. Lambertsen died on Feb. 11...