Amtrak, MARC & DC Metro Trains in Rockville

Seen here in Rockville, Maryland, are Amtrak Capitol Limited trains #29 & 30, operating between Washington DC and Chicago. Also seen in this video are MARC Brunswick line commuter trains that operate between Martinsburg or Frederick and Washington DC.
In between the MARC/Amtrak tracks, are the WMATA DC Metro Red Line tracks that operate between Glenmont and Shady Grove.
1. Amtrak Capitol Limited train #29 to Chicago
2. Amtrak Capitol Limited train #30 to Washington
3. DC Metro Red line train to Glenmont
4. DC Metro Red line train Shady Grove
5. MARC Brunswick line train #891 to Frederick
6. DC Metro Red line train to Shady Grove
7. DC Metro 7000 series test train heading north
8. MARC Brunswick line train #877 to Brunswick
9. DC Metro 7000 series test train heading south
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That was Train 875 heading to Martinsburg, WV in 4:21.