An Indian Air Force helicopter showers flower petals at the All India Institute of Medical Sciences (AIIMS) to pay tribute to doctors, nurses and police personnel who battle against COVID-19 pandemic in New Delhi, India, May 3, 2020. (Photo by Javed Dar/Xinhua)

Indian policemen on motorcycles pay tribute to doctors, nurses and police personnel who battle against COVID-19 pandemic in New Delhi, India, May 3, 2020. (Photo by Javed Dar/Xinhua)