Funding for this research was provided by:
U.S. Department of Homeland Security (HSHQDC-15-C-00064)
Received: 31 December 2020
Accepted: 15 January 2021
First Online: 3 February 2021
Compliance with ethical standards
: The authors declare no conflict of interest. DHS S & T staff performed a review of this manuscript prior to submission and provided editorial feedback.