The antennas are located in the Atacama Desert at 5000 meters altitude and are constantly exposed to extreme weather conditions and temperatures. How much time will they last? Are they durable through time? In this episode, Mark Galilee, one of the technician engineers of ALMA, will tell us about the antennas and their constant maintenance and inspections to keep the observatory functioning properly.Furthermore, Fabiola Cruzat, an Array Maintenance Group Supervisor, will help us understand the electronics inside the antennas.