The little MPSA14 darlington transistor and most LEDs will blow up with a current as high as 750mA.
The 16 ohm resistor will have 750mA in it if both the transistor and the LED are shorted. Then it will have the entire 12V supply across it and it will heat with 9W.
The 16 ohm resistor will have 750mA in it if both the transistor and the LED are shorted. Then it will have the entire 12V supply across it and it will heat with 9W.