Hammer referred to some kind of spy surveillance, can't remember the details.
Also, Q talks several times about the hammer falling.
For example: #570:
"Will SESSIONS drop the hammer?
1 of 22."
And look at #1044 -
"Fake pic push by MSM.
Videos / backup.
Google kill.
YouTube kill.
FB kill.
Twitter kill.
Yahoo kill.
Bing kill.
Instagram kill.
Net will be paused.
HAMMER.
On the clock.
Q"