Originally known as ARPA, Advanced Research Projects Agency, the agency helped create the internet:
In 1973, the U.S. Defense Advanced Research Projects Agency (DARPA) initiated a research program to investigate techniques and technologies for interlinking packet networks of various kinds. The objective was to develop communication protocols which would allow networked computers to communicate transparently across multiple, linked packet networks. This was called the Internetting project and the system of networks which emerged from the research was known as the “Internet.” The system of protocols which was developed over the course of this research effort became known as the TCP/IP Protocol Suite, after the two initial protocols developed: Transmission Control Protocol (TCP) and Internet Protocol (IP). Source: www.internetsociety.org
The motivations for this new initiative could be numerous, including a step back toward the ARPA days, a way to outdo the Chinese in defense applications, and/or a way to make a political claim for the next election.
I'd be curious to hear what more informed people think the motivation might be. Regardless, it seems to be a positive step towards electronics innovation.