Invitation letter (attached) has been amended to correct deadline to request attendance to site visit. Vendors who with to attend site visit related to this solicitation mut submite names and ID numbe... Invitation letter (attached) has been amended to correct deadline to request attendance to site visit. Vendors who with to attend site visit related to this solicitation mut submite names and ID numbers of the attendees by April 20, 2026. Site visit will take place April 22, 206 at 11:00 local time at U.S. Embassy Madrid, Spain.