While true, this didn't sound like a situation where the pilots where the pilots would have been so preoccupied that they couldn't take a moment to get on the PA and tell passengers they wouldn't be landing at LGB. This would allay concerns that passengers who know LGB well would have when they saw themselves landing at an airport that clearly isn't LGB. Is the plane being hijacked? Did the pilots land at the wrong airport, like happened to the Southwest plane in Branson earlier this year? I'm not saying these are rational concerns, but these are concerns that some passengers could have and pilots announcing they're going elsewhere would reassure them that a mistake or worse hadn't occured.