Ambiguity with Tails

In the section on Tails under "Consider encrypting your external storage devices", the indirect association between Tails leaving no trace in the system because it runs from a USB, and the fact that it deletes the usage history as it shuts down can be confusing.

Perhaps the two facts should be presented in different sentences. It's also better to clarify that Tails deletes the history from the USB from which it runs, asserting that it doesn't touch the computer to which the USB is connected.