Later, after the war, he called it Laru (acronym for Lambertsen Amphibious Respiratory Unit) and finally, in 1952, he changed his invention's name again to SCUBA (Self Contained Underwater Breathing Apparatus).

He invented the first Self-contained Underwater Breathing Apparatus (SCUBA) and demonstrated it to the Office of Strategic Services (OSS) (after already being rejected by the U.S. Navy) in a pool at a hotel in Washington, D.C.[8] OSS not only bought into the concept, they hired Major Lambertsen to lead the program and build-up the dive element of their maritime unit.

The OSS was also the predecessor of the Central Intelligence Agency (CIA) and the maritime element still exists inside their Special Activities Division.

On May 31, 2007, the guest speaker was Professor Marc Feldmann, head of Imperial College's Kennedy Institute of Rheumatology who is recognised for his discovery of anti-TNF treatment for rheumatoid arthritis.

Dr. Lambertsen's "Predictive Studies Series", spanning from 1969 with TEKTITE I to 1997, researched many aspects of humans in extreme environments.