This summary report is concerned specifically with infiltration of personnel across the land borders of South Vietnam. Three border security programs are discussed: enhanced border surveillance and two manned systems — a strong-point system and a barrier system (strong-points plus barrier). The two latter systems would involve "screening forces" deployed forward for surveillance and interdiction and "fire support and maneuver forces" to engage the enemy. The strong-point system would consist of a string of semi-independent defense positions to survey the border area and provide immediate local reaction with forces, including artillery and helicopters. The barrier would increase the capability of the strong-point for immediate and local reaction to infiltration. The barrier type considered in this report employs detection devices linked to emplaced ordnance through a communication network under human control. The costs and effectiveness of the three programs are estimated.