ALEXANDROUPOLIS, Greece—The EU’s border agency is trialing new high-tech surveillance equipment to detect illegal migrant boats, just as rapid gains by Taliban fighters in Afghanistan have raised the prospect of a surge in people fleeing to Europe.
A balloon system equipped with cameras is being tested at Alexandroupolis airport near the Greek-Turkish land border in northeastern Greece, and on the island of Limnos, with the aim of giving border officials a clearer view of approaching boats.
