A digital edition of the April issue of Proceedings is available for current USNI members to view. The magazine image below is a link to the online magazine and will take you outside the USNI website. Reprints of all articles are available. Please contact Member Services for reprint quantities less than 100 at 1-800-233-8764 or [email protected] . For high quality reprints of 100 or more email [email protected] .