Nested Json (GeoJson)

[Simon-Miles-rbwm]

I'm looking to search against a GeoJson, example extract below but I need some pointers on how to access the returned result back into my template. I can see in the console that the Query that I'm sending is returning results.

var getSearches = new Bloodhound({
		datumTokenizer: Bloodhound.tokenizers.obj.whitespace('value'), 
		queryTokenizer: Bloodhound.tokenizers.whitespace,
		remote: {
			url: 'http://localhost:3001/search/%QUERY',
			wildcard: '%QUERY'
		}
	});

	getSearches.initialize();
	
   $('.typeahead').typeahead(
        null, {
		name: 'getSearches',
        displayKey: 'site_name',
        source: getSearches,	
		templates: {
    header: '<div><strong>{{value}}</strong></div>'
  }	
    }).on('typeahead:selected', function(event, data){            
        $('.typeahead').val(data.features.properties.site_name);        
    });

"type": "FeatureCollection",
   "features": [
       {
           "type": "Feature",
           "geometry": {
               "type": "Point",
               "coordinates": [
                   -0.60140650987722599,
                   51.501188671221797
               ]
           },
           "properties": {
               "job_number": "95507",
               "job_entry_date": "12\04\2019 12:14:00",
               "locality_name": "Eton",
               "asset_number": "9700",
               "site_name": "Slough Road",
               "sor_item_name": "Driver\machine operator"
           }
       },
       {
           "type": "Feature",
           "geometry": {
               "type": "Point",
               "coordinates": [
                   -0.60140650987722599,
                   51.501188671221797
               ]
           },
           "properties": {
               "job_number": "95507",
               "job_entry_date": "12\04\2019 12:14:00",
               "locality_name": "Eton",
               "asset_number": "9700",
               "site_name": "Slough Road",
               "sor_item_name": "Ganger"
           }
       }.....