The 27 clues at top are attractions that might be seen in cities around the world. Each has an associated airport, and 3 letter IATA code:
CAK Akron, Ohio ALA Almaty, Kazakhstan SNA Anaheim, CA ANG Angouleme, France TER Angra do Heroísmo, Azores, Portugal BAL Batman, Turkey BRO Brownsville, Texas ERI Erie, Pennsylvania EXT Exeter, UK FOR Fortaleza, Brazil KER Kerman, Iran LWO Lviv, Ukraine MAN Manchester, UK MED Medina, Saudi Arabia MEL Melbourne, Australia NGS Nagasaki, Japan EMA Nottingham, UK PAP Port-au-prince, Haiti KEF Reykjavik, Iceland RUN Saint-denis (Reunion), France SAL San Salvador, El Salvador SEA Seattle, Washington TPE Taipei, Taiwan IKA Tehran, Iran UNI Union Island, St. Vincent and the Grenadines IAD Washington, D.C. ICT Wichita, Kansas
These 27 trigrams can be rearranged to describe the nine images at bottom:
UNI FOR MED SNA KEF ANG PAP ERI NGS RUN ICT EXT BAL ALA IKA SEA LWO MAN SAL TPE TER CAK EMA KER BRO MEL IAD
Taking the diagonal of these nine words/phrases spells the answer, UNPILOTED.