The whole thing could be an inter-agency op to simulate their logistics and capabilities against real threats on a massive scale. Its to prove a plan together in an emergency situation while bringing everyone towards cooperation, but of-course some people may end up dying or over-worked; but the results they argue, could be far worth it.

Either that or they are actually following through with their depopulation agenda.

Edit: I believe its the latter, since it also helps them restructure organizations accordingly through crisis situations. Of course, the public is only expendable... sigh