New Delhi, May 10 -- India's ongoing conflict with Pakistan escalated further, after the latter launched a fresh attack on its neighbour. Sirens were sounded and blackouts were enforced in Jammu, Samba, other areas.

In retaliation, India reportedly launched missiles and drones at four airbases in Islamabad. Top government officials have now said that India has also "decided that any future act of terror will be considered an Act of War against India and will be responded accordingly."

So what are the different sirens sounded in the wake of an impending war? What is the difference between a Red Alert and a Green Alert? What to do in case of sirens?

There are two types of air raid alert sirens that are sounded - Red Alert, and Green Aler...