Greetings from Houston, home of the Dynamo — and weaponry. El Capitan is on the sideline, awaiting the ceremonial pregame firing by former defender Craig Waibel. A military flyover is planned. A gun show is open a few blocks away at the convention center.

It’s an appropriate theme for a D.C. United side that has been successfully battling through adversity to advance to MLS’s Eastern Conference finals.

TV coverage starts at 4 p.m. ET on NBC Sports Network. Kickoff is at 4:21 with Arlo White and Kyle Martino handling commentary.

The second match in this series is next Sunday afternoon at RFK Stadium.

Today’s Western first leg: Seattle Sounders at Los Angeles Galaxy, 9 p.m. ET (ESPN).

United vs. Dynamo in the regular season:

April 28 at RFK: United 3 (Santos, De Rosario, Santos), Dynamo 2 (Bruin, Bruin).

May 12 at BBVA: Dynamo 1 (Davis), United 0.

July 15 at BBVA: Dynamo 4 (Davis, Bruin, Garcia, Ching), United 0.

With a yellow card today, these players would miss the second leg:

Houston: Ashe, Davis, Garcia, Hall, Sarkodie.

DCU: Pajoy.

In the latest installment on the MLS gastronomical road tour, the fish tacos and Pacifico hit the spot at Guadalajara del Centro near Insider base camp.

DCU: Willis; Russell, Jakovic, McDonald, Korb; DeLeon, Kitchen, Saragosa, Boskovic, Pontius; Pajoy. Subs: Dykstra, Dudar, Woolard, Neal, Augusto, Salihi, Santos.

HOU: Hall; Sarkodie, Boswell, Hainault, Ashe; Garcia, Moffat, Camargo, Davis; Bruin, Kandji. Subs: Deric, Barnes, Creavalle, Sturgis, Watson, Ching, Weaver.

Your pregame, in-game and postgame observations are welcome in our comments section.