Complex sentence: After hearing loud explosions from the Dawn's apartment, a visbly shaken Gloria decides she and Phil must go into hiding, and quickly packs a bag, grabs her cat and they leave, just as apolice SWAT team are entering with heavy weapons.
Split into simpler sentences: After hearing loud explosions from the Dawn's apartment, a visibly shaken Gloria decides she and Phil must go into hiding. She quickly packs a bag, grabs her cat, and escapes the building with Phil, just as a police SWAT team are entering with heavy weapons.