Flight Crew Last 90 Days 20; Flight Crew Total 300; Flight Crew Type 60
Other / Unknown
Conflict NMAC
Flight Crew Took Evasive Action
Environment - Non Weather Related; Human Factors
We had just finished a training mission and we were returning to [base]. We were on a southeasterly heading; 1000 FT MSL approximately 10 NM NW of ZZZ. Both pilots were on NVG (Night Vision Goggles). We had just tuned up the CTAF. We didn't hear any CTAF traffic. A few minutes later the pilot in the left seat called traffic. The other helicopter was difficult to break out from the cultural lighting and resulted in a delay in maneuvering to avoid. Once the pilot at the controls broke out the traffic; he turned left to avoid. The other helicopter was heading north and was about 100 FT below. The aircraft had approximately 200 FT of lateral separation.
MH60 student pilot at 1;000 feet on a Night Vision Goggles training exercise reports an NMAC with another helicopter at 900 feet.