Mexican troops arrived in Ciudad Juárez and Tijuana this week and will soon patrol 18 cities near the Mexico-U.S. border.

Around 1,650 troops from Mexico's National Guard arrived in Juárez, Mexico on Tuesday as part of 10,000 troops sent to reinforce the southern border.

A line of Mexican National Guard and Army trucks are rumbling along the border separating Ciudad Juárez and El Paso, Texas, among the first of 10,000 troops Mexico has sent to its northern frontier fo