United Technologies and two of its subsidiaries, Pratt & Whitney Canada (PWC) and Hamilton Sundstrand, settled criminal and civil charges in connection with the export of sensitive military software to China. The government claimed that, between 2002 and 2005, PWC sold to China engine-control software made by Hamilton Sundstrand, which PWC knew China was using to develop its first modern military attack helicopter, the Z-10. The government also alleged that United Technologies, PWC, and Hamilton Sundstrand failed to disclose to the U.S. government the illegal exports to China for several years, and when they did, their disclosures contained numerous false statements. PWC pleaded guilty to violating the Arms Export Control Act and making false statements. The three companies also entered into a two-year deferred prosecution agreement and paid a total of $75.7 million in fines and penalties ($20 million of which is a suspended amount which United Technologies agreed to spend on remedial compliance measures).