// JS array .push() method
let items_in_backpack = ['food', 'water', 'flashlight', 'GPS']; // Our starting array
items_in_backpack.push('javascript array push knowledge'); // Adds the <<< string to the array items_in_backpack
// Now the array is:
// ['food', 'water', 'flashlight', 'GPS', 'javascript array push knowledge']