An official website of the United States government
Here's how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS.
A lock
()
or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
ARRA Acceleration Frequently Asked Questions (FAQ) for NSF Principal Investigators with awards funded under the American Recovery and Reinvestment Act of 2009 (ARRA)