‘SHAKA’. Davao City Mayor Sara Duterte-Carpio and Mayor Bernard P Carvalho Jr. of the County of Kaua’i, Hawai’i do the “shaka” hand sign commonly used by Hawaiians to convey the aloha spirit or greeting of thanks. The two cities signed the Sister City Agreement on Monday, February 5, 2018. (Mark Joy G. Basallajes / davaotoday.com)