Exhibit 99.2
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including amendments thereto) with respect to the Common Stock, par value $0.0001, of Global Defense & National Security Systems, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
| Dated: November 10, 2015 | |
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| | Cowen Investments LLC |
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| | By: | RCG LV Pearl LLC, its sole member |
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| | By: | Cowen Group, Inc., its sole member |
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| | By: | |
| | | Name: | Owen S. Littman |
| | | Title: | General Counsel |
| | RCG LV Pearl LLC |
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| | By: | Cowen Group, Inc., its sole member |
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| | By: | |
| | | Name: | Owen S. Littman |
| | | Title: | General Counsel |
| | Cowen Group, Inc. |
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| | By: | |
| | | Name: | Owen S. Littman |
| | | Title: | General Counsel |
| | /s/ Peter A. Cohen |
| | Peter A. Cohen |
