The Firing_Squad_I.zip file you have requested: Maps Levels Missions / Multiplayer / 4 Player / E to F Titles / Firing Squad I - 411.44kb is not available. Perhaps try browsing all files for the game C&C3: Tiberium Wars and upload any files you want to share or are missing. This is the only information we could locate:
A 4-Player Command and Conquer 3 skirmish map from Janeoply. The map is split corner to corner by a long river, and several bridges span the river. There is urban area on each side of the river but in a different style on each side.