I worked with Alberto for many years at JPL and have many fond memories of early morning blimp field tests and numerous discussions about robotics and space exploration. I was sad to see him leave JPL but was happy that he was able to find such a good place in Australia to continue his work. The attached photo of the two of us is from 2009 just after we had a fun flight on a Zeppelin NT airship that was operating out of Long Beach, California. That was a fun day! He will be missed. My condolences to his family, friends and colleagues.