UFO (?) In the “Virtual Trip Los Angeles, U.S.A.” Video

The unknown object (does not resemble an airplane or a helicopter) can be seen at 13:26 minutes into the video 
(in the upper right hand corner of the screen):

https://www.youtube.com/watch?v=Rh8nfUy4VTY

The object flies near the Los Angeles International Airport.

https://www.youtube.com/watch?v=Rv0jtXXdS0o 
(1/3)

https://www.youtube.com/watch?v=ZL0YJoXswtY 
(Zoom 1) (2/3)

https://www.youtube.com/watch?v=ZvAVEkcnMP0 
(Zoom 2) (3/3)

(youtube.com images)

UFO Book (Preview): “UFOs Over Topanga Canyon: Eyewitness Accounts of the California Sightings” (Google Books)

By Preston E. Dennett

Publisher: Llewellyn Publications (now Llewellyn Worldwide), Woodbury (St. Paul), Minnesota

Publication date: 8 May 1999

https://books.google.com/books?id=8NMKKIV2518C&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false

(amazon.com image)

UFO Journal Article: “UFOs IN AND OVER PUERTO RICO’S NATIONAL FOREST (EL YUNQUE)”

By Jorge Martín,
Flying Saucer Review (UK), Volume 44, No. 1, 1999

Source: ignaciodarnaude.com

Jorge Martín is a Puerto Rican UFO researcher:

http://www.ignaciodarnaude.com/avistamientos_ovnis/Martin,UFO%20Photos,Puerto%20Rico,FSR1999V44N1.pdf

Map of El Yunque Caribbean National Forest, Puerto Rico 
(fossweb.com image)