I worked on experiments in Elementary-Particle Physics. My last experiment was at the Stanford Linear Accelerator Center (SLAC) to make precision tests of the Standard Model by studying the interactions of high-energy polarized electrons with antielectrons. Our apparatus is called the Stanford Large Detector (SLD) which weighs 4000 tons and is 6 stories high! Hundreds of physicists from 33 institutions around the world collaborated on this experiment. It was a classic example of Big Science. Here are two attractive pictures, one of a 3-jet event and the other of a rare 4-jet event.