Indian school girls tie a sacred thread or rakhi onto the wrists of Indian Central Reserve Police Force (CRPF) personnel during the Raksha Bandhan festival at the India-Pakistan Wagah Border post on August 21, 2013. The ceremony topically involves a bracelet being tied by a sister to her brother's wrist, symbolising the sister's love and prayers for her brother's well-being, and the brother's vow to protect her.