The document is a compilation regarding an invasion event that took place in 2009, with updates made in December 2016, May 2018, and July 2020. It includes references to various online sources related to the invasion. The content appears to be categorized or indexed by a series of identifiers (djn_01 to djn_22).

1. Invasion in 2009
Compiled in December 2016 –
Updated May 2018 & July 2020

2. References:
http://www.space-invaders.com/world/daejeon/
http://www.space-invaders.com/post/publiccom/
https://fr.pinterest.com/benlaot/invader-daejeon/

7. DJN_01

8. DJN_02

9. DJN_03

10. DJN_04

11. DJN_05

12. DJN_06

13. DJN_07

14. DJN_08

15. DJN_09

16. DJN_10

17. DJN_11

18. DJN_13

19. DJN_14

20. DJN_15

21. DJN_17

22. DJN_18

23. DJN_19

24. DJN_20

25. DJN_21

26. DJN_22