PORT-AU-PRINCE, HAITI — About 150 military police officers from Central America have arrived in Haiti to reinforce the embattled government’s fight against violent gangs that have upended daily life for millions in the Caribbean country. The deployment of around 75 security officers, mostly from Guatemala, was greeted Saturday at Toussaint Louverture International Airport in Port-au-Prince by the Kenyan commander of the U.N.-backed mission that for months has been struggling to restore order. “The gangs have only two choices: surrender, lay down their weapons, and face justice, or face us in the field,” the officer, Godfrey Otunge, said in remarks at