- Began technical and cave diving 1989
- Technical Instructor rating: 1997
- eCCR certified 2000 and holds ratings on 7 different rebreathers to date.
- Technical dive instructor 10+ years
- Closed Circuit Rebreather instructor 7+ years
- First IANTD Optima Instructor under the tutelage of Tom Mount, 2004
- 1st IANTD Hammerhead eCCR instructor in US
- 4th Titan CCR Instructor worldwide January 2007
- CCR cave instructor: One of first 5 IANTD ccr cave instructors in US
- Expedition trimix Instructor to 400 fw
- New technology and testing experience: privileged to receive and test dived the first run of
HammerHead electronics, which were developed for the inspiration.
- Contributor to design and implementation of IANTD Expedition Trimix course
- Designed Isobaric Counter Diffusion tables, first of its kind, for IANTD June 2008
- Emergency Medical / Fire Fighting: Emergency medical technician and fire fighter for decades
Works in the motion picture industry as medic for cast and crew

Jeff began scuba diving 1963 as a child in his parents pool and 1968 in the tributaries of the Chesapeake Bay.
CCR instructor since 2003