August 5, 2021. Shenzhen Three Defense Comprehensive Drill was held, LinkAV was invited to build emergency communication network using its IP MESH Radios including airborne node, relay nodes and 1-RU shipborne node. This comprehensive exercise has set up exercise venues in various districts, Dapeng New District, and Shenzhen-Shantou Special Cooperation Zone. More than 6,000 people participated in the exercise. More than 300 sets of construction machinery, drainage equipment, aircraft, ships, ships, boats, and communication equipment were used.