Sonomatic Confirmation Of Tracheal Intubation
Continuously tells you tube position while you are intubating.

Click version

If after it has had time to load the program you just see a white screen try to use: Java's own plugin

Click  the mouse on START to begin.  Then click near the end of the tube to intubate.  Keep moving the mouse a little in the direction you want to go and then click again.