gameState.entities.forEach(function(ent) {
    if (gameState.playerData.isEnemy[ent.owner()] &&
        (ent.hasClass("CitizenSoldier") || ent.hasClass("Super"))) {
        var distSquared = (ent.position()[0] - pos[0]) * (ent.position()[0] - pos[0])
                          + (ent.position()[1] - pos[1]) * (ent.position()[1] - pos[1]);
        if (distSquared < defenceRange * defenceRange) {
            nearby.push(ent.id());
        }
    }
});