Arrived on site at 11:00 am as per JC request after picking up Fiber equipment at Corporate.  Started testing the network to find out where the problem was.  Started at Lolinda and checked the network at Rack 2 and everything looked to be working correctly.  Moved on to Rack 1 and everything looked good at that point.  All Lolinda devices appeared to be working correctly.  Moved on to El Techo and Rack 3 and I could see that every device connected to Rack 3 was offline.  Checked the Fiber connection and I could see that the light was off.  Based on previous experience with Fiber, I tried various steps to get the connection going again.  After doing multiple tests, it became clear that they were a connectivity issue with the Fiber.  Also, when I arrived, I called the Bridge but no tech joined after 30 minutes so I called JC to inform him and then I joined the bridge again and I was joined by Dale and other technicians.  Eventually Greg joined the call as well.  With guidance from Greg, we proceeded to do additional tests, replacing Fiber cable and SFP and nothing happened.  Greg contacted Rodrigo after it became clear that the Fiber connection was broken somewhere between Lolinda and El Techo.  Rodrigo contacted Access Cabling and they dispatched Francisco to assist on site and he arrived by 2:00 pm.  After he arrived, he and I spent more time trying to possibly locate where the problem with the was and in the meantime, Rodrigo started working on a backup plan which was to use network cable to possibly bypass the Fiber connection.  Around 4:30 pm, I was asked to go to my office as I had a few 100 feet long cables that would be necessary to go from El Techo to Lolinda.  In the meantime, Rodrigo left Novato to assist, and Guido also arrived on site to assist.  Nuranne was also dispatched to assist.  Eventually, we were able to run a cable from El Techo to Lolinda and additional configuration was done by Greg to establish a secondary connection between Lolinda and El Techo without creating a possible loop.  About 7:00 pm, the connection to El Techo was restored and the crew made sure that all network devices at El Techo were working correctly.   Then Rodrigo took everyone to dinner at Lolinda which was very nice.  
Thank you.