 By 1996, Avianca Postal Services became Deprisa, which provided various mail services.After the September 11 attacks, Avianca, the regional carrier SAM Colombia, and its major rival ACES Colombia joined efforts to create Alianza Summa, which began merged operations on 20 May 2002.In November 2003, Alianza Summa was disbanded and ACES Colombia was liquidated altogether and SAM Colombia was acquired to be a regional carrier under Avianca's brand.