MANILA, Philippines — Senate President Win Gatchalian said he was "deeply alarmed and outraged" by the shooting incident at San Jose National High School in Tacloban City, killing three learners and wounding five others.The senator on Monday called on the Department of Education (DepEp) to "further strengthen security measures across all campuses.”"Hindi katanggap-tanggap na umaabot ang ganitong klaseng karahasan sa mga paaralang dapat nagsisilb…