Channel System Work Puerto Rico National Guard soldiers perform clearing and reconstruction work on a 10-mile stretch of the water channel system near the neighborhood of Llanadas, Isabela, Puerto Rico, Oct. 2, 2017. Puerto Rico National Guard photo by Sgt. Alexis Vélez SHARE: Download: Full Size (1.15 MB) Tags: Hurricane Maria, Puerto Rico National Guard, national guard Credit: Sgt. Alexis Vélez VIRIN: 171002-Z-HW727-002A.JPG Photo Gallery