If I'm a U.S.-owned business, can work be performed outside the U.S.?

For both Phase I and Phase II, the R/R&D work must be performed in the United States. Based on a rare and unique circumstance, the U.S. DOT may approve a particular portion of the R/R&D work to be performed or obtained in a country outside of the United States, for example, if a supply or material or other item or project requirement is not available in the United States. Such circumstance must be approved in writing by a U.S. DOT Contracting Officer and is at the discretion of the U.S. DOT.