Comment 6 for bug 895611

In the past, I've run into similar circumstances. Once it was a hidden stealth hero unit, another though:

From a snapshot from 4/10/2010
20=Computer,PDPLANE,0,13723,-2497,56,Paradrop Overfly,None,0,-1,1,1
21=,ORCA,256,21,121,167,Guard,None,0,0,1,1
22=Computer,EDFTBOMBER,0,-7324,-2343,205,Hunt,None,0,-1,1,0
23=Computer,EDFTBOMBER,0,-7559,-2034,203,Hunt,None,0,-1,1,0

The EDFTBOMBER being another bomber, this time without stealth.