Israel might be a mecca of start-ups but it is also very well known for its military technology. Israel Aerospace Industries (IAI), known worldwide for their commercial aerospace technology has given a demo of butterfly-shaped drone that will not even let the enemies know what they are dealing with. The drone, which is more of the size of a moth is expected to play a strategic role in determining where the enemy is hiding. Weighing at a mere 20 grams, the four-winged butterfly can flap its wings up to 14 times per second. Surprisingly, what amounts to 15 grams of its weight is a camera and a memory card.