Off-treatment and progression-free for at least 12 months and =< 14 years; treatment cessation is defined as the final dose of chemotherapy, the last dose (fraction) of radiation, or date of surgery, whichever occurred last The subject has received radionuclide treatment within 6 weeks of the first dose of study treatment The participant has received radionuclide treatment within 6 weeks of the first dose of study treatment The participant has received any other type of investigational agent within 28 days before the first dose of study treatment The participant has experienced any of the following:* Clinically-significant gastrointestinal bleeding within 6 months before the first dose of study treatment* Hemoptysis of >= 0.5 teaspoon (2.5 mL) of red blood within 3 months before the first dose of study treatment* Any other signs indicative of pulmonary hemorrhage within 3 months before the first dose of study treatment The subject has received radiation therapy:* To bone metastasis within 14 days before the first dose of study treatment * To any other site(s) within 28 days before the first dose of study treatment The subject has received radionuclide treatment within 6 weeks of the first dose of study treatment The subject has received prior treatment with a small molecule kinase inhibitor or a hormonal therapy (including investigational kinase inhibitors or hormones) within 14 days or five half-lives of the compound or active metabolites, whichever is longer, before the first dose of study treatment The subject has received any other type of investigational agent within 28 days before the first dose of study treatment The subject has experienced any of the following:* Clinically-significant gastrointestinal bleeding within 6 months before the first dose of study treatment* Hemoptysis of >= 0.5 teaspoon (2.5 mL) of red blood within 3 months before the first dose of study treatment* Any other signs indicative of pulmonary hemorrhage within 3 months before the first dose of study treatment Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of trametinib and during the study Breastfeeding should be discontinued prior to the first dose of study drug and women should refrain from nursing throughout the treatment period and for 14 days following the last dose of study drug TREATMENT: Breastfeeding should be discontinued while the patient is on this trial and for 30 days following last dose of study drug Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of study treatment and during the study Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of study treatment and during the study Patients who are receiving any other investigational agents have received any other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of study treatment and during the study Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of trametinib and during the study; patients previously treated with v-raf murine sarcoma (RAF) and/or mitogen-activated protein kinase (MEK) inhibitors are excluded from the study; multikinase antiangiogenic tyrosine kinase inhibitors such as regorafenib, sorafenib, sunitinib, etc. whose primary mechanism of action is not RAF inhibition, are allowed; if there are any questions, please contact study's principal investigator Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of study drug(s) and during the study Patients who are receiving any other investigational agents; patients who have taken an investigational drug within 28 days or 5 half-lives (minimum 14 days), whichever is shorter, prior to randomization Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of trametinib or standard of care agent Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of trametinib and during the study The subject has received any other type of investigational agent within 28 days before the first dose of study treatment The subject has experienced any of the following:* Clinically-significant gastrointestinal bleeding within 6 months before the first dose of study treatment* Hemoptysis of >= 0.5 teaspoon (2.5 mL) of red blood within 3 months before the first dose of study treatment* Any other signs indicative of pulmonary hemorrhage within 3 months before the first dose of study treatment Patients who are currently participating in or have participated in a study of an investigational agent or using an investigational device within 4 weeks of the first dose of treatment Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of study treatment and during the study; patients that have used other BRAF or mitogen-activated protein kinase kinase (MEK) inhibitor are excluded The subject has received radiation therapy:* To the thoracic cavity or abdomen within 3 months before the first dose of study treatment, or has ongoing complications, or is without complete recovery and healing from prior radiation therapy* To bone or brain metastasis within 3 weeks before the first dose of study treatment* To any other site(s) within 28 days before the first dose of study treatment The subject has received radionuclide treatment within 6 weeks of the first dose of study treatment The subject has received prior treatment with a small molecule kinase inhibitor within 14 days or five half-lives of the compound or active metabolites, whichever is longer, before the first dose of study treatment The subject has received any other type of investigational agent within 28 days before the first dose of study treatment The subject has experienced any of the following:* Clinically-significant gastrointestinal bleeding within 6 months before the first dose of study treatment* Hemoptysis of >= 0.5 teaspoon (2.5 mL) of red blood within 3 months before the first dose of study treatment* Any other signs indicative of pulmonary hemorrhage within 3 months before the first dose of study treatment Prior or concurrent therapy with SSA is permitted; a stable dose at least 2 months prior to study start and must continue on the stable dose while receiving study treatment; SSA is not considered as systemic treatment Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of talimogene laherparepvec (T-VEC) and during the study Female subject is pregnant or breast-feeding, or planning to become pregnant during study treatment and through 7 months after the last dose of treatment; female subject of childbearing potential who is unwilling to use acceptable method(s) of effective contraception during study treatment and through 7 months after the last dose of treatment; sexually active subjects and their partners unwilling to use male or female latex condom to avoid potential viral transmission during sexual contact while on treatment and within 30 days after treatment with talimogene laherparepvec Use of other investigational, chemotherapeutic or targeted drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of talimogene laherparepvec and during the study are ineligible The study treatment must be excluded in the following patients:* Female subject is pregnant or breast-feeding, or planning to become pregnant during study treatment and through 4 months after the last dose of talimogene laherparepvec* Female subject of childbearing potential who is unwilling to use acceptable method(s) of effective contraception during study treatment and through 4 months after the last dose of talimogene laherparepvec* Sexually active subjects and their partners unwilling to use male or female latex condom to avoid potential viral transmission during sexual contact while on treatment and within 30 days after treatment with talimogene laherparepvec Use of other investigational drugs within 28 days (or five half-lives, whichever is shorter; with a minimum of 14 days from the last dose) preceding the first dose of trametinib and during the study