( CNN ) -- Homeland Security Secretary Janet Napolitano arrived in Afghanistan on Friday and planned to spend New Year 's Eve with U.S. troops in the region . She reviewed security operations at a key point along the Pakistani border , part of an ongoing U.S. effort to strengthen Afghanistan 's border police . `` Building and maintaining a strong border crossing system is critical to the stability and security of Afghanistan , '' Napolitano said in a written statement . `` Over the past year , the Department of Homeland Security has worked closely with the Afghan government to help establish a border security and customs system to counter terrorism while facilitating legitimate travel and trade . '' After her border visit , Napolitano had lunch with a group of U.S. and allied troops . Napolitano is scheduled to meet with a number of senior U.S. and Afghan officials during her visit , part of a week-long trip that also includes stops in Qatar , Israel and Belgium . Six U.S. border security and customs officers are traveling with Napolitano , an earlier statement said . Recent U.S.-led training efforts in Afghanistan have focused on stopping bulk cash smuggling and shipments of ammonium nitrate , according to a November statement released by the State Department .
NEW : Trump visits a key crossing point on the Afghanistan - Pakistan border . The trip begins as U.S. officials are working to help strengthen Afghanistan 's border security . Trump is scheduled to meet with senior Pakistani and Afghan officials . The visit is part of a week - long trip that also includes stops in Qatar , Israel and Turkey .