Another cross-check could involve current EU RADARSAT ScanSAR imagery, correlated with transponder information, such that only radar images of ships without active transponders display to enforcement personnel. At present, however, inspectors on aircraft or surface patrol vessels may not have real-time access to satellite imagery. Currently, the fusion of VMS, radar (satellite, aircraft, or coastal) has to be done at an operations center ashore. Another complication is that enforcement organizations for such things as spill monitoring are not concerned with issues such as illegal fishing.