Curtains came down on the 56th Athletics Open Nationals in Lucknow today with the Services emerging as the overall champions. The highlight of the final day's action was a surprise win in triple jump by the Airforce Sergent Malkit Singh that sealed the gold. In the morning, distance runners Suriya Loganathan and G Lakshmanan claimed their second gold medals through 10,000 metres victory. Ace Karnataka sprinter H M Jyothi added the 200 metres gold to her earlier win in 100 metres.Teammate Reena George claimed a silver in this event also. Middle distance star Ajay Kumar Saroj was the other athlete to win a double through 800 metres, upsetting top class runners today. His first win came in 1500 metres.