I am awfully sad to learn that Obaid passed away yesterday. He was a phenomenal person who led a rich life fulfilled with accomplishments. He influenced me in many ways and I am very grateful for that. He also trained many scientists who will continue his legacy. My condolences to his wonderful wife Asiya and his children, Imran, Deeba, Yumna and Kaleem. My prayers are with them at this difficult time. Vijay