They are bringing out the big guns at the Alamo today -- literally -- to celebrate Texas Independence Day.
The big gun on display at the Alamo is a replica of the 18-pound cannon that William Barret Travis used to answer Santa Ana's demand for surrender.
"(It's) a lot of firepower," said antique armorer Eugene Robinson.
The replica is modeled after the largest cannon used during the Battle of the Alamo.
Robinson's restored replica was used in the 2004 making of the movie The Alamo.
It will be on display all weekend as part of the Texas Independent Day celebration, as well as the 176th anniversary of the Battle of the Alamo.