Lost Gray Tabby in Mission Canyon (Santa Barbara)

Our sweet gray tabby cat named Kalani has been missing since Tuesday. He is an indoor and outdoor cat that is very friendly, and in our old neighborhood would regularly go visit other houses. He is an exceptional hunter and has lived in areas with predators his whole life, so I am hoping someone thought he was a stray and has kept him indoors somewhere. He does not wear a collar. His brother Raj has been meowing like crazy and misses him dearly, as do we. Please reach out with any information and if he has visited your home and you have him, please let him out. Thank you so much. I've attached photos for reference-the orange cat in the photos is his brother.