You would get through the town much more easily in uniform." "I suppose so," nodded Cantor, and passed on.
Close at hand two revolver shots rang out.
"Ensign Darrin," Trent ordered, "take a man with you and investigate that firing.

Locate it, if possible, and if any Mexican attempts to fire again, try to bring him in-----dead!" "You will come with me," ordered Dave, turning to Coxswain Riley.
That petty officer hastily filling his magazine, followed Darrin, who drew his own revolver.
Hardly had officer and man turned the corner when a pistol flesh came from the top of a house nearly at the next corner.
The bullet did not pass near enough for them to hear it.

Plainly the shot had been fired at some one else.
"Keep close to the buildings," ordered Dave, leading the way toward the sniper.

"I don't want that fellow to see us until we're right under him and ready to get him." Noiselessly they went up the street.

It would be impossible for the sniper to see them unless he bent out over the edge of the roof from which he was firing.
While they were advancing another shot was fired from the same roof.
Watching the direction of the flash, Darrin was able to guess the direction of the man or men at whom the Mexican was firing.
"Some of our sharpshooters must still be posted on roofs," Dave whispered over his shoulder to Riley.
"I know one man who won't be doing much more on a roof, if I can get a sight of him for three seconds," gruffly answered Riley.
Then they stopped in front of the house in question.
"You slip across to the doorway opposite, and watch for your man," whispered Darrin.