TowerMapController.cls

public class TowerMapController {
	@AuraEnabled
    public static List<Tower__c> getAllTowers() {
        String theObject = 'Tower__c';
        List<String> theFields = new List<String>{'Id', 'Name', 'State__r.Name', 'Location__Latitude__s', 'Location__Longitude__s'};
		List<String> theFilters = new List<String>();
        String sortField = 'Name';
        String sortOrder = 'ASC';
        List<Tower__c> allTowers = UtilityClass.queryObjects(theObject, theFields, theFilters, sortField, sortOrder);
        return allTowers;
    }
}