Depends on when you worked on it. If it was in the last few years, it probably didn't. It went offline in the early 00's, I think (too lazy to wiki it).......Never used Omega. I was under the impression that that was soley for ships, but I may be mistaken.
Loran is still alive but I understand it is again being considered for shut down in the continental U.S. It was going to be shut down but received a last minute reprieve due to public outcry and political pressure.
I had Loran in the Citation I flew a couple of years ago and it worked well. Basically like the initial non-moving map GPS sets that came out for general aviation.
I actually learned to use Loran the hard way at Mather (Loran charts, Master-Slave stations, O-scope to read the pulse, etc.)
We had Omega in the mighty Warpig. When it worked, it was accurate. But you had to watch for lane skips which threw off your position in multiples of 14 (I think) NMs. It was basically a on/off system for us that gave a lat/long.