PREPARE WHAT TO DO AFTER THE IMPACT

If a city is struck, infrastructure will be badly affected. NASA recommends that the authorities identify the most vulnerable points of the electricity and water systems in advance, organising them to minimise damage. The oil and gas industry operating by the coast must move drill rigs and ships to safety to avoid destruction, if the asteroid hits the sea, causing a tsunami. Afterwards, the US will need to ask other nations for reconstruction assistance.