VIN not vin number.
Having too many military friends and family must have rubbed off... here a few more for you to figure out for fun!
1. SSA
2. ACE
3. SAS
4. CAT
5. ASC
6. MDA
7. MSC
8. ATP
9. CSP
10. MOS
11. PSD
12. ACA
13. MIP
14. MCM
15. AIC
16. MOC
17. SAP
18. CMR
19. CCA
20. CTF
21. TCS
22. CST
23. ATM
24. SDR
25. MDC
26. FMP
27. COB
28. ABS
29. PCS
30. IRGC
31. NSA
32. NATO
33. EOC
34. MASS
35. CMF
36. PDA
37. WAC
38. PMF
39. EAD
40. RCP
41. DSD
42. MEF
43. EAF
44. AFSC
45. LAD
46. TPC
47. RDD
48. NET
49. ISO
50. IOS
51. TED
52. TAI
53. LRP
54. CLP
55. ARB
56. ICT
57. BDA
58. MEL
59. WTI
60. ALD
61. OSD
62. OPC
63. JFC
64. GCP
65. WES
66. IEP
67. NRO
68. USO
69. PRR
70. DOS
71. BAR
72. LOD
73. FOL
74. DCN
75. TSE
76. METS
77. MIT
78. PED
79. PFM
80. OPR
81. EMI
82. RFM
83. FLA
84. PTR
85. OOM
86. FFP
87. RMF
88. SEL
89. MFT
90. AWT
91. MUSE
92. BSB
93. PAX
94. FSL
95. OBE
96. EPW
97. CAV
98. JWICS
99. WAY
100. OSW
Must be something to the "all caps" stuff that rubs off on people?