A loud boom and shaking was reported around 8:45 a.m. Friday and was heard and felt all by 10News viewers from all around San Diego County. 100 people responded.Sallene Leang was working at a Seaport Village store when she felt the shaking."What I heard this morning just the doors rattling; I didn't know what it was. I didn't think it was an earthquake because the ground wasn't shaking," said Leang.The U.S. Geological Survey confirmed the shaking was not an earthquake. A representative from MCAS Miramar said they did not know what caused the booming sound.Midway-area resident Carol Hill told 10News she thought the loud sound was her neighbor banging on her windows."All at once there was a knocking noise and a rumbling vibration on my kitchen window," Hill said.One person said: "We felt it in Coronado but it did not feel like an earthquake. We thought it felt like an explosion or something."Another Facebook fan said: "I live by Gillespie Field I thought it was a jet taking off."The National Weather Service has ruled out that the noise was caused by anything weather-related.