Authorities in Mexico are searching for Hari Simran Singh Khalsa, a yoga teacher from Brooklyn who disappeared Tuesday while on a hike in the Tepozteco Mountains. Before he went missing, Khalsa sent his wife Ad Purkh Kaur, née Emily Smith, a selfie from the mountains with the caption, "Looking down on you"; not long after, Kaur received a second text from Khalsa, saying he had "accidentally summited another mountain" and would be "a little later coming back."