It is good to make friends with death. Whenever the plane takes off, we recite Yeshé Tsogyel mantra. Whenever the plane lands, we recite Vajra Guru mantra. This is not for protection or a ‘thank you’ for the protection – but as the recognition that we may continue to see our students or not.p169, Tracts of the Sun : An Earth Orbit of Vajrayana Expressions. Ngakpa Chögyam and Khandro Déchen, Aro Books, 2022, ISBN 978-1-898185-28-4