I am a movie director and I just received the following movie plot. Could you help me answer this question? If not, let me know by writing "Not answerable". Plot title: Time Chasers Movie plot: Nick Miller has discovered the key to time-travel. Using a small plane located at his local airport in Vermont, the local college professor manages to fly 50 years into the future, and return to the present day (1991).Hoping to capitalize on this discovery, Nick places two calls: -the first call is to a local company called GenCorp, with Nick claiming he's developed a new fuel-efficient engine. -the second call is to the local newspaper, where Nick claims his Grandmother is going to skydive for the first time.The next day, Nick meets Matthew Paul from GenCorp, and Lisa Henson from the newspaper. Nick is surprised to see Lisa as they both went to school together long ago. After coaxing both of them into his airplane, Nick then tells them about his discovery of Time-Travel. Though Matthew is apprehensive, Lisa suggests they go 50 years in the future.Nick manages to take them to 2041. After landing, he shows them all that has changed. Nick also claims that he wishes to obtain an R&D; grant because of his discovery, as he is currently out of money. Matthew then explains that once they get back, he intends to tell the head of GenCorp about Nick's discovery as soon as possible.Some time after the three have returned, Matthew makes good on his promise, and Nick shows his discovery to the head of GenCorp, J.K. Robertson. Robertson immediately wishes to do business with Nick, and also offers a position at GenCorp to Lisa. However, Lisa refuses and cautions Nick that associating with GenCorp is a bad idea. Nick tries to get her to reconsider, but she walks away.After some time, Nick turns over the information he has regarding his time-travel experiments, but on trying to access the files that are being kept in GenCorp's computers, finds that he does not have access to this.Going to the local supermarket, Nick comes across Lisa. Lisa apologizes for the way she reacted the last time they talked, but Nick claims he has a surprise for her. Taking her to the airport, Nick gets access to his plane, and takes Lisa back to the... My question: Who tries to shoot down Nick's plane ?
Robertson