I'm a Navy Hornet pilot, and as a new guy, my Flight Surgeon found an abnormality on my EKG. I was issued a waiver by the Navy and have had no issues in over 22 years. In getting my medical issued a number of years ago in prep for my ATP, I had to check yes to the Heart or Vascular trouble question on the FAA 8500. My AME talked to the FAA who issued a letter establishing my eligibility for a 1st class medical. The letter says nothing about special issuance, and my medical says no limitations. So is this a special issuance, or something else? Should this create any cause for concern as a potential new hire?