article_snippet.sent: Alaska Airlines Flight 448 way to Los Angeles from Seattle-Tacoma International Airport on Monday afternoon when the pilot reported hearing unusual banging from cargo hold.
article_snippet.sent: unusual banging did come from a person and the pilot turned out to be a ramp agent from Menzies Aviation, a contractor for Alaska Airlines that handles loading the luggage, Alaska Airlines said.  
article_snippet.sent: All of a sudden we heard all this pounding underneath a plane
article_snippet.sent: The pounding grew louder.
article_snippet.sent: At that point, we started hearing yelling, screams for help, very, very faint," Jamie Davis said.  
article_snippet.sent: As the banging continued, a federal air marshal sprang into action.
article_snippet.sent: "himself started banging back, and himself yelled really loud and said, 'We're getting ready to land, hold on to something.'