Authorities struggled Monday to get aid to more than 1 million people stranded by floods in a north Indian state, with one local government leader describing the situation as a catastrophe, the Associated Press reported. Air force helicopters and troops were trying to get food to people in the stricken areas of Bihar state that were inundated by flood waters last week after torrential rains caused the Kosi river in neighboring Nepal to burst its banks. The Bihar state government issued a plea to relief agencies to step in and help get food and shelter to the residents. «It is not a normal flood, but a catastrophe,» said Bihar Chief Minister Nitish Kumar after making an aerial survey of the ravaged districts. Kumar said more than 1 million people were cut off from the rest of the country because the floods had washed away roads and made railway lines impassable.