47 U.S.C. § 3010
NATIONAL ALERT AND TSUNAMI WARNING PROGRAM.
“The Assistant Secretary shall make payments of not to exceed $156,000,000, in the aggregate, during the fiscal year 2007 through 2012 period from the Digital Television Transition and Public Safety Fund established under section 309(j)(8)(E) of the Communications Act of 1934 (47 U.S.C. 309(j)(8)(E)) to implement a unified national alert system capable of alerting the public, on a national, regional, or local basis to emergency situations by using a variety of communications technologies. The Assistant Secretary shall use $50,000,000 of such amounts to implement a tsunami warning and coastal vulnerability program.