With jury duty you have to turn over the jury pay (at most places) to get the regular pay. I'm not sure the reservists want to turn over their military paycheck. Looks like someone trying to ring the bell twice to me as well.
During the Gulf War, Alaska kept the McChord pilots on all their benefits as long as they managed to fly one trip a month for the airline. But they didn't pay them their Alaska guarantee while they were on active duty.