Pocket shutter

A shutter assembly comprising:

• a first and second shutter panel, each comprising:
• a missile-repelling membrane panel;
• a frame having an elongated hollow body with inwardly disposed wall elements forming an inwardly facing U-shaped channel adapted to retain the membrane panel on at least two sides;
• and
• a membrane-retaining element separably attachable to the frame, allowing the membrane panel to be removed from the frame or secured within the frame;
• a first hinge assembly with a first side attached to the frame of the first shutter panel and a second side attached to a building structure;
• a second hinge assembly with a first side attached to the frame of the second shutter panel and a second side attached to the building structure;
• and
• an alignment track with a first F-shaped portion that couples to the membrane-retaining element of the first shutter panel and a second F-shaped portion that couples to the membrane-retaining element of the second shutter panel, the first and second F-shaped portions of the alignment track making respective contact with each other and preventing the first and second shutter panels from moving relative to each other in at least one direction.