Los Angeles: Reality TV star Caitlyn Jenner has paid tribute to her friend who passed away in a motorcycle accident earlier this week. Caitlyn shared a collage of photographs of helicopter pilot Charles T. Aaron and his memorial service on Instagram, reports mirror.co.uk. “Sad day. My good friend Charles lost his life on Sunday. My prayers go out to his father Chuck Aaron who lost his best friend,” she wrote alongside the collage. Chuck previously took to Instagram to share the tragic news that his son had died.