Continued by an updating website with the same title
Numbering
Numbering began with Vol 4, issue 2, published in 2011
Notes
Mode of access: Internet from the Customs and Border Protection web site. Address as of 6/29/2009: http://www.cbp.gov/xp/cgov/newsroom/publications/frontline_magazine/; current access is available via PURL
Spring 2008; title from title screen (viewed June 29, 2009)
Vol 10, issue 1, published in 2018 (CBP, viewed July 29, 2021)