Washington - Once the exclusive visual playground of hipsters, photo sharing app, Instagram is slowly but surely becoming a platform for more official uses too. First there was the official White House account and now the US' Transport Security Administration (TSA) have also jumped on the bandwagon, posting photos of prohibited items confiscated from travellers at airports across the states. Their very first post was a compilation shot of seized fireworks with the hashtag-heavy caption: "#Fireworks don't fly. (On planes) #july4 #travel#instatsa #firstpost #aviation." It got 383 likes.So far they have only posted 11 photos mostly of scary-looking knives, guns and the odd hand grenade and have managed to garner more than 44 000 followers.