| Communications |
| 17 |
Harris Corp. |
$1,566,994,000 |
11 |
| 19 |
L3 Technologies |
$1,464,191,000 |
24 |
| 87 |
Digital Management Inc. |
$217,272,000 |
71 |
| 98 |
Motorola Solutions |
$175,615,000 |
|
| Consulting |
| 13 |
Accenture |
$2,138,189,000 |
13 |
| 20 |
Deloitte |
$1,408,645,000 |
20 |
| 72 |
PricewaterhouseCoopers |
$279,193,000 |
77 |
| 77 |
KPMG LLP |
$256,977,000 |
73 |
| 8 |
Booz Allen Hamilton |
$3,683,668,000 |
8 |
| Defense |
| 18 |
BAE Systems |
$1,480,030,000 |
18 |
| 2 |
Lockheed Martin Corp. |
$6,872,155,000 |
1 |
| 3 |
Northrop Grumman Corp. |
$6,168,409,000 |
2 |
| 36 |
General Atomics Technologies Corp. |
$612,704,000 |
68 |
| 4 |
Boeing Co. |
$5,153,675,000 |
3 |
| 43 |
DRS Technologies Inc. |
$490,299,000 |
60 |
| 48 |
Rockwell Collins |
$442,196,000 |
52 |
| 5 |
Raytheon Co. |
$4,326,778,000 |
6 |
| 6 |
General Dynamics Corp. |
$4,251,506,000 |
5 |
| Engineering Services |
| 25 |
Jacobs Engineering |
$1,071,730,000 |
23 |
| 47 |
Tetra Tech Inc. |
$449,135,000 |
62 |
| 80 |
CH2M Hill Inc. |
$246,161,000 |
97 |
| 88 |
Adams Communication & Engineering Technology Inc. |
$208,666,000 |
59 |
| 90 |
Scientific Research Corp. |
$202,148,000 |
90 |
| Hardware |
| 34 |
Dell Inc. |
$691,948,000 |
31 |
| 51 |
HP Inc. |
$418,844,000 |
|
| Hardware |
| 70 |
Cisco Systems Inc. |
$291,016,000 |
95 |
| 74 |
GE |
$276,749,000 |
76 |
| International Development |
| 28 |
Chemonics International Inc. |
$988,454,000 |
44 |
| 59 |
Development Alternatives Inc. |
$348,361,000 |
69 |
| IT Services |
| 53 |
SGT Inc. |
$410,946,000 |
42 |
| 57 |
Actionet Inc. |
$364,182,000 |
53 |
| 63 |
ECS Federal |
$341,580,000 |
79 |
| 64 |
NCI Inc. |
$327,991,000 |
61 |
| 71 |
Salient CRGT Inc. |
$279,300,000 |
86 |
| 78 |
Alvarez & Associates LLC |
$256,014,000 |
94 |
| 84 |
By Light Professional IT Services Inc. |
$230,838,000 |
|
| 85 |
Smartronix Inc. |
$227,597,000 |
|
| 92 |
Colsa Corp. |
$195,922,000 |
|
| 99 |
Calibre Systems Inc. |
$175,093,000 |
|
| Professional services |
| 15 |
PAE |
$1,963,398,000 |
15 |
| 16 |
AECOM |
$1,715,527,000 |
17 |
| 21 |
Fluor Corp. |
$1,297,803,000 |
27 |
| 22 |
Engility |
$1,140,787,000 |
19 |
| 23 |
KBR Inc. |
$1,137,810,000 |
|
| 29 |
Aerospace Corp. |
$917,037,000 |
26 |
| 32 |
Alion Science & Technogy |
$755,451,000 |
32 |
| 37 |
Arctic Slope Regional Corp. |
$591,253,000 |
35 |
| 42 |
Vectrus Systems Corp. |
$490,576,000 |
40 |
| 44 |
RTI International |
$467,489,000 |
47 |
| 46 |
United Technologies Corp. |
$456,996,000 |
45 |
| 58 |
Battelle Memorial Insititute |
$359,084,000 |
21 |
| 68 |
Torch Technologies Inc. |
$300,970,000 |
75 |
| 75 |
Intuitive Research and Technology Corp. |
$273,155,000 |
72 |
| 76 |
Keypoint Government Solutions |
$263,746,000 |
65 |
| 82 |
Trax International Corp. |
$239,532,000 |
84 |
| 93 |
Bowhead Government Services |
$192,901,000 |
|
| 94 |
AASKI Technology Inc. |
$192,240,000 |
66 |
| Professional services |
| 97 |
Noblis Inc. |
$177,019,000 |
89 |
| Professional services |
| 50 |
Parsons Corp. |
$430,775,000 |
55 |
| Research |
| 66 |
Abt Associates |
$311,191,000 |
74 |
| 86 |
CNA Corp. |
$218,647,000 |
|
| Research |
| 61 |
Westat Inc. |
$343,541,000 |
63 |
| Satellites |
| 56 |
Viasat Inc. |
$365,388,000 |
|
| Software |
| 65 |
Microsoft Corp. |
$327,476,000 |
70 |
| Space |
| 54 |
SpaceX |
$386,969,000 |
|
| Systems Integration |
| 1 |
Leidos Inc. |
$6,889,618,000 |
16 |
| 10 |
DXC Technology |
$3,167,621,000 |
7 |
| 11 |
Science Applications International Corp. |
$2,765,476,000 |
10 |
| 24 |
IBM Corp. |
$1,110,996,000 |
22 |
| 26 |
CGI Group |
$1,060,122,000 |
29 |
| 27 |
Vencore |
$1,040,300,000 |
25 |
| 30 |
ManTech International |
$896,262,000 |
28 |
| 31 |
Serco Group |
$777,854,000 |
30 |
| 38 |
Sierra Nevada Corp. |
$580,611,000 |
38 |
| 39 |
Unisys Corp. |
$564,093,000 |
39 |
| 52 |
ICF International Inc. |
$413,240,000 |
50 |
| 69 |
Maximus Inc. |
$300,509,000 |
54 |
| 7 |
CSRA |
$3,883,329,000 |
4 |
| 9 |
CACI International |
$3,421,412,000 |
9 |
| 96 |
KeyW Corp. |
$180,255,000 |
|
| Telecommunications |
| 12 |
Verizon Communications Inc. |
$2,156,107,000 |
12 |
| 14 |
AT&T Inc. |
$1,967,208,000 |
14 |
| 35 |
CenturyLink |
$664,074,000 |
34 |
| Value-added distributor |
| 40 |
Carahsoft Technology Corp. |
$546,227,000 |
43 |
| 73 |
ImmixGroup Inc. |
$278,256,000 |
58 |
| value-added reseller |
| 100 |
Government Acquisitions Inc. |
$170,388,000 |
|
| 33 |
CDW-G |
$694,473,000 |
37 |
| 41 |
World Wide Technology Inc. |
$491,419,000 |
48 |
| 45 |
Mythics Inc. |
$465,309,000 |
49 |
| 49 |
Iron Bow Technologies |
$437,942,000 |
46 |
| 55 |
DLT Solutions |
$366,469,000 |
56 |
| 60 |
Insight Enterprises Inc. |
$347,574,000 |
41 |
| 63 |
Red River Computer Co. |
$330,668,000 |
57 |
| 67 |
FCN Inc. |
$304,073,000 |
82 |
| 79 |
Data Link Solutions LLC |
$255,239,000 |
|
| 81 |
Four LLC |
$242,202,000 |
88 |
| 83 |
Four Points Technology LLC |
$238,341,000 |
|
| 89 |
Thundercat Technology LLC |
$204,565,000 |
87 |
| 91 |
Sterling Computers Corp. |
$200,136,000 |
98 |
| 95 |
Affigent LLC |
$184,251,000 |
80 |