Complex sentence: IronKey's founding was partially funded by the U.S. federal government, with a grant of US $1.4 million through the Homeland Security Research Projects Agency, and their products have been used extensively by the U.S. government in various areas.
Split into simpler sentences: IronKey's founding was partially funded by the U.S. federal government, with a grant of US $1.4 million through the Homeland Security Research Projects Agency. Their products have been used by the U.S. government in various areas.